./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:42:58,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:42:58,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:42:58,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:42:58,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:42:58,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:42:58,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:42:58,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:42:58,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:42:58,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:42:58,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:42:58,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:42:58,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:42:58,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:42:58,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:42:58,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:42:58,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:42:58,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:42:58,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:42:58,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:42:58,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:42:58,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:42:58,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:42:58,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:42:58,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:42:58,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:42:58,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:42:58,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:42:58,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:42:58,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:42:58,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:42:58,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:42:58,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:42:58,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:42:58,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:42:58,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:42:58,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:42:58,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:42:58,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:42:58,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:42:58,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:42:58,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:42:58,955 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:42:58,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:42:58,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:42:58,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:42:58,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:42:58,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:42:58,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:42:58,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:42:58,959 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:42:58,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:42:58,959 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:42:58,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:42:58,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:42:58,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:42:58,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:42:58,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:42:58,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:42:58,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:42:58,961 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:42:58,961 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:42:58,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:42:58,961 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:42:58,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:42:58,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:42:58,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:42:58,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:42:58,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:42:58,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:42:58,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:42:58,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:42:58,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:42:58,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:42:58,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:42:58,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:42:58,964 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:42:58,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:42:58,964 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:42:58,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:42:59,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:42:59,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:42:59,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:42:59,299 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:42:59,299 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:42:59,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 15:43:00,523 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:43:00,730 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:43:00,731 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 15:43:00,737 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d1f36b7/f1f3313b998a4a2dbd830f045f18634e/FLAG071b95bab [2023-08-30 15:43:00,751 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d1f36b7/f1f3313b998a4a2dbd830f045f18634e [2023-08-30 15:43:00,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:43:00,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:43:00,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:43:00,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:43:00,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:43:00,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:43:00" (1/1) ... [2023-08-30 15:43:00,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5079dc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:00, skipping insertion in model container [2023-08-30 15:43:00,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:43:00" (1/1) ... [2023-08-30 15:43:00,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:43:00,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:43:00,991 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 15:43:01,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:43:01,021 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:43:01,060 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 15:43:01,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:43:01,085 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:43:01,085 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:43:01,091 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:43:01,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01 WrapperNode [2023-08-30 15:43:01,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:43:01,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:43:01,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:43:01,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:43:01,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,169 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 434 [2023-08-30 15:43:01,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:43:01,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:43:01,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:43:01,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:43:01,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,239 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:43:01,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:43:01,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:43:01,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:43:01,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (1/1) ... [2023-08-30 15:43:01,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:43:01,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:01,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:43:01,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:43:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:43:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 15:43:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:43:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:43:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:43:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 15:43:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:43:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:43:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:43:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:43:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:43:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:43:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:43:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:43:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:43:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:43:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:43:01,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:43:01,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:43:01,318 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:43:01,478 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:43:01,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:43:01,971 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:43:02,165 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:43:02,165 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-30 15:43:02,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:43:02 BoogieIcfgContainer [2023-08-30 15:43:02,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:43:02,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:43:02,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:43:02,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:43:02,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:43:00" (1/3) ... [2023-08-30 15:43:02,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646f8245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:43:02, skipping insertion in model container [2023-08-30 15:43:02,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:43:01" (2/3) ... [2023-08-30 15:43:02,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646f8245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:43:02, skipping insertion in model container [2023-08-30 15:43:02,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:43:02" (3/3) ... [2023-08-30 15:43:02,176 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-08-30 15:43:02,182 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:43:02,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:43:02,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-08-30 15:43:02,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:43:02,301 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:43:02,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 421 transitions, 866 flow [2023-08-30 15:43:02,462 INFO L130 PetriNetUnfolder]: 37/418 cut-off events. [2023-08-30 15:43:02,462 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:43:02,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 418 events. 37/418 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 585 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-08-30 15:43:02,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 421 transitions, 866 flow [2023-08-30 15:43:02,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 400 transitions, 815 flow [2023-08-30 15:43:02,483 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:43:02,489 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 400 transitions, 815 flow [2023-08-30 15:43:02,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 400 transitions, 815 flow [2023-08-30 15:43:02,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 400 transitions, 815 flow [2023-08-30 15:43:02,557 INFO L130 PetriNetUnfolder]: 36/400 cut-off events. [2023-08-30 15:43:02,557 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:43:02,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 400 events. 36/400 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 543 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 341. Up to 2 conditions per place. [2023-08-30 15:43:02,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 6514 [2023-08-30 15:43:16,925 INFO L134 LiptonReduction]: Checked pairs total: 8096 [2023-08-30 15:43:16,925 INFO L136 LiptonReduction]: Total number of compositions: 463 [2023-08-30 15:43:16,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:43:16,942 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;@164cc956, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:43:16,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-08-30 15:43:16,946 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:43:16,946 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:43:16,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:16,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:43:16,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:16,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash 58938, now seen corresponding path program 1 times [2023-08-30 15:43:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:16,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573936597] [2023-08-30 15:43:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:16,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573936597] [2023-08-30 15:43:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573936597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:17,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:43:17,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:43:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875939797] [2023-08-30 15:43:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:17,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:43:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:43:17,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:43:17,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 15:43:17,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:17,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:17,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 15:43:17,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:17,862 INFO L130 PetriNetUnfolder]: 1165/1771 cut-off events. [2023-08-30 15:43:17,863 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 15:43:17,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 1771 events. 1165/1771 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9396 event pairs, 890 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 1680. Up to 875 conditions per place. [2023-08-30 15:43:17,877 INFO L137 encePairwiseOnDemand]: 862/884 looper letters, 77 selfloop transitions, 8 changer transitions 4/91 dead transitions. [2023-08-30 15:43:17,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 91 transitions, 390 flow [2023-08-30 15:43:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:43:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:43:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1192 transitions. [2023-08-30 15:43:17,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494720965309201 [2023-08-30 15:43:17,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1192 transitions. [2023-08-30 15:43:17,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1192 transitions. [2023-08-30 15:43:17,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:17,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1192 transitions. [2023-08-30 15:43:17,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:17,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:17,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:17,925 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 129 flow. Second operand 3 states and 1192 transitions. [2023-08-30 15:43:17,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 91 transitions, 390 flow [2023-08-30 15:43:17,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 91 transitions, 372 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:43:17,944 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 179 flow [2023-08-30 15:43:17,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2023-08-30 15:43:17,953 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2023-08-30 15:43:17,953 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 179 flow [2023-08-30 15:43:17,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:17,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:17,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:43:17,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:43:17,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:17,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1829658, now seen corresponding path program 1 times [2023-08-30 15:43:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:17,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915811517] [2023-08-30 15:43:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:18,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:18,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915811517] [2023-08-30 15:43:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915811517] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:18,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:43:18,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:43:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154122038] [2023-08-30 15:43:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:18,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:43:18,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:43:18,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:43:18,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 15:43:18,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:18,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 15:43:18,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:18,439 INFO L130 PetriNetUnfolder]: 1157/1751 cut-off events. [2023-08-30 15:43:18,439 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 15:43:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1751 events. 1157/1751 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 9374 event pairs, 886 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 1814. Up to 1719 conditions per place. [2023-08-30 15:43:18,448 INFO L137 encePairwiseOnDemand]: 879/884 looper letters, 49 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 15:43:18,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 263 flow [2023-08-30 15:43:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:43:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:43:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1130 transitions. [2023-08-30 15:43:18,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42609351432880843 [2023-08-30 15:43:18,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1130 transitions. [2023-08-30 15:43:18,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1130 transitions. [2023-08-30 15:43:18,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:18,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1130 transitions. [2023-08-30 15:43:18,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 376.6666666666667) internal successors, (1130), 3 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,462 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 179 flow. Second operand 3 states and 1130 transitions. [2023-08-30 15:43:18,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 263 flow [2023-08-30 15:43:18,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:43:18,465 INFO L231 Difference]: Finished difference. Result has 45 places, 52 transitions, 149 flow [2023-08-30 15:43:18,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2023-08-30 15:43:18,466 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -13 predicate places. [2023-08-30 15:43:18,466 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 149 flow [2023-08-30 15:43:18,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:18,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:43:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:43:18,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:18,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1829685, now seen corresponding path program 1 times [2023-08-30 15:43:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:18,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540365959] [2023-08-30 15:43:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:18,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:18,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540365959] [2023-08-30 15:43:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540365959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140079302] [2023-08-30 15:43:18,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:18,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:18,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:18,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:43:18,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:43:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:18,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:43:18,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:18,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:43:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:18,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140079302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:43:18,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:43:18,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:43:18,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32881017] [2023-08-30 15:43:18,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:43:18,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:43:18,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:18,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:43:18,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:43:18,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 15:43:18,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 362.14285714285717) internal successors, (2535), 7 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:18,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:18,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 15:43:18,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:19,645 INFO L130 PetriNetUnfolder]: 2891/4370 cut-off events. [2023-08-30 15:43:19,646 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-30 15:43:19,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 4370 events. 2891/4370 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 26309 event pairs, 2215 based on Foata normal form. 0/2301 useless extension candidates. Maximal degree in co-relation 9142. Up to 866 conditions per place. [2023-08-30 15:43:19,669 INFO L137 encePairwiseOnDemand]: 872/884 looper letters, 166 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2023-08-30 15:43:19,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 197 transitions, 891 flow [2023-08-30 15:43:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:43:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:43:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2373 transitions. [2023-08-30 15:43:19,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473981900452489 [2023-08-30 15:43:19,675 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2373 transitions. [2023-08-30 15:43:19,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2373 transitions. [2023-08-30 15:43:19,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:19,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2373 transitions. [2023-08-30 15:43:19,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 395.5) internal successors, (2373), 6 states have internal predecessors, (2373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:19,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:19,694 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:19,694 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 149 flow. Second operand 6 states and 2373 transitions. [2023-08-30 15:43:19,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 197 transitions, 891 flow [2023-08-30 15:43:19,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 197 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:43:19,701 INFO L231 Difference]: Finished difference. Result has 52 places, 73 transitions, 355 flow [2023-08-30 15:43:19,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=52, PETRI_TRANSITIONS=73} [2023-08-30 15:43:19,702 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -6 predicate places. [2023-08-30 15:43:19,702 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 73 transitions, 355 flow [2023-08-30 15:43:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 362.14285714285717) internal successors, (2535), 7 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:19,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:19,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:43:19,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:43:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:19,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:19,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1760469380, now seen corresponding path program 1 times [2023-08-30 15:43:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219937688] [2023-08-30 15:43:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:19,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:19,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219937688] [2023-08-30 15:43:19,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219937688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:19,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:43:19,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:43:19,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387557425] [2023-08-30 15:43:19,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:19,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:43:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:43:19,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:43:20,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 15:43:20,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 73 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:20,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:20,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 15:43:20,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:21,092 INFO L130 PetriNetUnfolder]: 5766/8696 cut-off events. [2023-08-30 15:43:21,093 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 15:43:21,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18265 conditions, 8696 events. 5766/8696 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 58640 event pairs, 4430 based on Foata normal form. 0/4592 useless extension candidates. Maximal degree in co-relation 18253. Up to 4291 conditions per place. [2023-08-30 15:43:21,147 INFO L137 encePairwiseOnDemand]: 880/884 looper letters, 108 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-30 15:43:21,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 112 transitions, 713 flow [2023-08-30 15:43:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:43:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:43:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1186 transitions. [2023-08-30 15:43:21,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44720965309200605 [2023-08-30 15:43:21,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1186 transitions. [2023-08-30 15:43:21,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1186 transitions. [2023-08-30 15:43:21,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:21,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1186 transitions. [2023-08-30 15:43:21,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:21,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:21,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:21,162 INFO L175 Difference]: Start difference. First operand has 52 places, 73 transitions, 355 flow. Second operand 3 states and 1186 transitions. [2023-08-30 15:43:21,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 112 transitions, 713 flow [2023-08-30 15:43:21,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 112 transitions, 661 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-30 15:43:21,166 INFO L231 Difference]: Finished difference. Result has 54 places, 74 transitions, 328 flow [2023-08-30 15:43:21,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2023-08-30 15:43:21,167 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-08-30 15:43:21,167 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 328 flow [2023-08-30 15:43:21,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:21,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:21,168 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:43:21,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:43:21,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:21,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1324671403, now seen corresponding path program 2 times [2023-08-30 15:43:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:21,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275423111] [2023-08-30 15:43:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:21,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:21,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:21,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275423111] [2023-08-30 15:43:21,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275423111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:21,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336485562] [2023-08-30 15:43:21,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:43:21,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:21,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:21,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:43:21,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:43:21,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:43:21,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:43:21,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:43:21,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:43:21,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:43:21,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336485562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:21,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:43:21,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:43:21,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663832188] [2023-08-30 15:43:21,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:43:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:43:21,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:43:21,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 884 [2023-08-30 15:43:21,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:21,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:21,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 884 [2023-08-30 15:43:21,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:22,539 INFO L130 PetriNetUnfolder]: 5766/8695 cut-off events. [2023-08-30 15:43:22,539 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-08-30 15:43:22,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18259 conditions, 8695 events. 5766/8695 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 58564 event pairs, 4430 based on Foata normal form. 1/4604 useless extension candidates. Maximal degree in co-relation 18246. Up to 8530 conditions per place. [2023-08-30 15:43:22,584 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 65 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-30 15:43:22,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 460 flow [2023-08-30 15:43:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:43:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:43:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1138 transitions. [2023-08-30 15:43:22,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291101055806938 [2023-08-30 15:43:22,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1138 transitions. [2023-08-30 15:43:22,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1138 transitions. [2023-08-30 15:43:22,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:22,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1138 transitions. [2023-08-30 15:43:22,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:22,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:22,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:22,598 INFO L175 Difference]: Start difference. First operand has 54 places, 74 transitions, 328 flow. Second operand 3 states and 1138 transitions. [2023-08-30 15:43:22,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 460 flow [2023-08-30 15:43:22,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:43:22,601 INFO L231 Difference]: Finished difference. Result has 54 places, 73 transitions, 328 flow [2023-08-30 15:43:22,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=54, PETRI_TRANSITIONS=73} [2023-08-30 15:43:22,602 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2023-08-30 15:43:22,602 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 73 transitions, 328 flow [2023-08-30 15:43:22,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:22,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:22,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:43:22,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:43:22,813 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 [2023-08-30 15:43:22,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:22,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1260018834, now seen corresponding path program 1 times [2023-08-30 15:43:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:22,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763957365] [2023-08-30 15:43:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:22,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:22,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763957365] [2023-08-30 15:43:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763957365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:22,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:43:22,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:43:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660032517] [2023-08-30 15:43:22,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:43:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:43:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:43:23,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 884 [2023-08-30 15:43:23,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 73 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:23,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:23,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 884 [2023-08-30 15:43:23,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:24,660 INFO L130 PetriNetUnfolder]: 8191/12577 cut-off events. [2023-08-30 15:43:24,660 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2023-08-30 15:43:24,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26430 conditions, 12577 events. 8191/12577 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 92111 event pairs, 6645 based on Foata normal form. 5/6901 useless extension candidates. Maximal degree in co-relation 26416. Up to 8530 conditions per place. [2023-08-30 15:43:24,733 INFO L137 encePairwiseOnDemand]: 878/884 looper letters, 107 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-08-30 15:43:24,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 117 transitions, 724 flow [2023-08-30 15:43:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:43:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:43:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1833 transitions. [2023-08-30 15:43:24,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2023-08-30 15:43:24,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1833 transitions. [2023-08-30 15:43:24,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1833 transitions. [2023-08-30 15:43:24,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:24,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1833 transitions. [2023-08-30 15:43:24,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 366.6) internal successors, (1833), 5 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:24,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 884.0) internal successors, (5304), 6 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:24,749 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 884.0) internal successors, (5304), 6 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:24,750 INFO L175 Difference]: Start difference. First operand has 54 places, 73 transitions, 328 flow. Second operand 5 states and 1833 transitions. [2023-08-30 15:43:24,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 117 transitions, 724 flow [2023-08-30 15:43:24,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 117 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:43:24,753 INFO L231 Difference]: Finished difference. Result has 58 places, 74 transitions, 345 flow [2023-08-30 15:43:24,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=58, PETRI_TRANSITIONS=74} [2023-08-30 15:43:24,754 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2023-08-30 15:43:24,754 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 74 transitions, 345 flow [2023-08-30 15:43:24,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:24,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:24,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:43:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:43:24,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:24,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash -449464877, now seen corresponding path program 1 times [2023-08-30 15:43:24,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324984234] [2023-08-30 15:43:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:43:24,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:24,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324984234] [2023-08-30 15:43:24,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324984234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:24,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626974171] [2023-08-30 15:43:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:24,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:24,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:43:24,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:43:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:24,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:43:24,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:43:24,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:43:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626974171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:43:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:43:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747508572] [2023-08-30 15:43:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:24,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:43:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:43:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:43:24,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 15:43:24,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 74 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:24,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:24,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 15:43:24,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:26,097 INFO L130 PetriNetUnfolder]: 8191/12572 cut-off events. [2023-08-30 15:43:26,098 INFO L131 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2023-08-30 15:43:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27338 conditions, 12572 events. 8191/12572 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 91253 event pairs, 6645 based on Foata normal form. 0/7796 useless extension candidates. Maximal degree in co-relation 27323. Up to 8042 conditions per place. [2023-08-30 15:43:26,199 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 106 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2023-08-30 15:43:26,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 686 flow [2023-08-30 15:43:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:43:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:43:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1553 transitions. [2023-08-30 15:43:26,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391968325791855 [2023-08-30 15:43:26,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1553 transitions. [2023-08-30 15:43:26,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1553 transitions. [2023-08-30 15:43:26,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:26,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1553 transitions. [2023-08-30 15:43:26,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 388.25) internal successors, (1553), 4 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:26,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 884.0) internal successors, (4420), 5 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:26,226 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 884.0) internal successors, (4420), 5 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:26,226 INFO L175 Difference]: Start difference. First operand has 58 places, 74 transitions, 345 flow. Second operand 4 states and 1553 transitions. [2023-08-30 15:43:26,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 686 flow [2023-08-30 15:43:26,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 676 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:43:26,230 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 337 flow [2023-08-30 15:43:26,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-08-30 15:43:26,231 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-30 15:43:26,231 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 337 flow [2023-08-30 15:43:26,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 371.75) internal successors, (1487), 4 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:26,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:26,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:43:26,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:43:26,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:26,438 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:26,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:26,438 INFO L85 PathProgramCache]: Analyzing trace with hash -405848169, now seen corresponding path program 1 times [2023-08-30 15:43:26,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:26,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985526045] [2023-08-30 15:43:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985526045] [2023-08-30 15:43:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985526045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:26,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:43:26,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:43:26,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998801703] [2023-08-30 15:43:26,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:26,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:43:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:26,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:43:26,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:43:26,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 15:43:26,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:26,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:26,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 15:43:26,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:28,683 INFO L130 PetriNetUnfolder]: 16351/25040 cut-off events. [2023-08-30 15:43:28,684 INFO L131 PetriNetUnfolder]: For 1245/1245 co-relation queries the response was YES. [2023-08-30 15:43:28,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54347 conditions, 25040 events. 16351/25040 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 197566 event pairs, 13290 based on Foata normal form. 0/15523 useless extension candidates. Maximal degree in co-relation 54332. Up to 12333 conditions per place. [2023-08-30 15:43:28,816 INFO L137 encePairwiseOnDemand]: 880/884 looper letters, 104 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-08-30 15:43:28,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 670 flow [2023-08-30 15:43:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:43:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:43:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1180 transitions. [2023-08-30 15:43:28,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444947209653092 [2023-08-30 15:43:28,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1180 transitions. [2023-08-30 15:43:28,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1180 transitions. [2023-08-30 15:43:28,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:28,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1180 transitions. [2023-08-30 15:43:28,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:28,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:28,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:28,827 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 337 flow. Second operand 3 states and 1180 transitions. [2023-08-30 15:43:28,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 670 flow [2023-08-30 15:43:28,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:43:28,833 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 346 flow [2023-08-30 15:43:28,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-08-30 15:43:28,835 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-30 15:43:28,836 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 346 flow [2023-08-30 15:43:28,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:28,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:28,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:43:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:43:28,837 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:28,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:28,837 INFO L85 PathProgramCache]: Analyzing trace with hash -449464820, now seen corresponding path program 1 times [2023-08-30 15:43:28,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:28,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355349822] [2023-08-30 15:43:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:28,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:43:28,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:28,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355349822] [2023-08-30 15:43:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355349822] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:28,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720723015] [2023-08-30 15:43:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:28,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:43:28,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:43:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:29,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:43:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:29,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:43:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:29,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720723015] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:43:29,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:43:29,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 12 [2023-08-30 15:43:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839880592] [2023-08-30 15:43:29,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:43:29,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:43:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:43:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:43:29,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 884 [2023-08-30 15:43:29,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 342.46153846153845) internal successors, (4452), 13 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:29,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:29,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 884 [2023-08-30 15:43:29,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:34,482 INFO L130 PetriNetUnfolder]: 33586/50942 cut-off events. [2023-08-30 15:43:34,482 INFO L131 PetriNetUnfolder]: For 2951/2951 co-relation queries the response was YES. [2023-08-30 15:43:34,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111388 conditions, 50942 events. 33586/50942 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 3848. Compared 426134 event pairs, 26580 based on Foata normal form. 5/31920 useless extension candidates. Maximal degree in co-relation 111372. Up to 14528 conditions per place. [2023-08-30 15:43:34,778 INFO L137 encePairwiseOnDemand]: 872/884 looper letters, 258 selfloop transitions, 31 changer transitions 0/291 dead transitions. [2023-08-30 15:43:34,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 291 transitions, 1690 flow [2023-08-30 15:43:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 15:43:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 15:43:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7728 transitions. [2023-08-30 15:43:34,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973673385438091 [2023-08-30 15:43:34,797 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7728 transitions. [2023-08-30 15:43:34,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7728 transitions. [2023-08-30 15:43:34,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:34,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7728 transitions. [2023-08-30 15:43:34,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 351.27272727272725) internal successors, (7728), 22 states have internal predecessors, (7728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:34,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 884.0) internal successors, (20332), 23 states have internal predecessors, (20332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:34,846 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 884.0) internal successors, (20332), 23 states have internal predecessors, (20332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:34,847 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 346 flow. Second operand 22 states and 7728 transitions. [2023-08-30 15:43:34,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 291 transitions, 1690 flow [2023-08-30 15:43:34,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 291 transitions, 1678 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:43:34,855 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 586 flow [2023-08-30 15:43:34,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=586, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2023-08-30 15:43:34,857 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2023-08-30 15:43:34,857 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 586 flow [2023-08-30 15:43:34,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 342.46153846153845) internal successors, (4452), 13 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:34,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:34,859 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:43:34,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:43:35,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:35,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:35,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash -450917824, now seen corresponding path program 1 times [2023-08-30 15:43:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748427107] [2023-08-30 15:43:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:35,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:35,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748427107] [2023-08-30 15:43:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748427107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:43:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005167466] [2023-08-30 15:43:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:35,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:43:35,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:43:35,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:43:35,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:43:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:35,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:43:35,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:43:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:35,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:43:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:35,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005167466] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:43:35,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:43:35,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:43:35,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028746428] [2023-08-30 15:43:35,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:43:35,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:43:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:43:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:43:35,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 884 [2023-08-30 15:43:35,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 362.15384615384613) internal successors, (4708), 13 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:35,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:35,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 884 [2023-08-30 15:43:35,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:47,287 INFO L130 PetriNetUnfolder]: 73888/112052 cut-off events. [2023-08-30 15:43:47,287 INFO L131 PetriNetUnfolder]: For 7142/7142 co-relation queries the response was YES. [2023-08-30 15:43:47,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245110 conditions, 112052 events. 73888/112052 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 5606. Compared 996784 event pairs, 58476 based on Foata normal form. 96/70286 useless extension candidates. Maximal degree in co-relation 245088. Up to 15180 conditions per place. [2023-08-30 15:43:47,951 INFO L137 encePairwiseOnDemand]: 873/884 looper letters, 458 selfloop transitions, 74 changer transitions 0/534 dead transitions. [2023-08-30 15:43:47,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 534 transitions, 3608 flow [2023-08-30 15:43:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:43:47,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:43:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4761 transitions. [2023-08-30 15:43:47,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44881221719457015 [2023-08-30 15:43:47,962 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4761 transitions. [2023-08-30 15:43:47,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4761 transitions. [2023-08-30 15:43:47,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:43:47,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4761 transitions. [2023-08-30 15:43:47,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 396.75) internal successors, (4761), 12 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:47,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 884.0) internal successors, (11492), 13 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:47,987 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 884.0) internal successors, (11492), 13 states have internal predecessors, (11492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:47,987 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 586 flow. Second operand 12 states and 4761 transitions. [2023-08-30 15:43:47,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 534 transitions, 3608 flow [2023-08-30 15:43:48,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 534 transitions, 3400 flow, removed 70 selfloop flow, removed 2 redundant places. [2023-08-30 15:43:48,035 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1122 flow [2023-08-30 15:43:48,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1122, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2023-08-30 15:43:48,036 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-08-30 15:43:48,036 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1122 flow [2023-08-30 15:43:48,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 362.15384615384613) internal successors, (4708), 13 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:48,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:43:48,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:43:48,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:43:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 15:43:48,247 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:43:48,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:43:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash 303446711, now seen corresponding path program 1 times [2023-08-30 15:43:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:43:48,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545065390] [2023-08-30 15:43:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:43:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:43:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:43:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:43:48,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:43:48,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545065390] [2023-08-30 15:43:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545065390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:43:48,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:43:48,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:43:48,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741911262] [2023-08-30 15:43:48,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:43:48,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:43:48,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:43:48,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:43:48,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 884 [2023-08-30 15:43:48,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1122 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:43:48,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:48,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 884 [2023-08-30 15:43:48,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:44:06,318 INFO L130 PetriNetUnfolder]: 114104/166524 cut-off events. [2023-08-30 15:44:06,318 INFO L131 PetriNetUnfolder]: For 13752/13752 co-relation queries the response was YES. [2023-08-30 15:44:07,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354645 conditions, 166524 events. 114104/166524 cut-off events. For 13752/13752 co-relation queries the response was YES. Maximal size of possible extension queue 7200. Compared 1359165 event pairs, 34188 based on Foata normal form. 0/98531 useless extension candidates. Maximal degree in co-relation 354615. Up to 138205 conditions per place. [2023-08-30 15:44:07,475 INFO L137 encePairwiseOnDemand]: 877/884 looper letters, 143 selfloop transitions, 2 changer transitions 3/150 dead transitions. [2023-08-30 15:44:07,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 1452 flow [2023-08-30 15:44:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:44:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:44:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1176 transitions. [2023-08-30 15:44:07,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434389140271493 [2023-08-30 15:44:07,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1176 transitions. [2023-08-30 15:44:07,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1176 transitions. [2023-08-30 15:44:07,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:44:07,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1176 transitions. [2023-08-30 15:44:07,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:07,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:07,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:07,485 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1122 flow. Second operand 3 states and 1176 transitions. [2023-08-30 15:44:07,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 1452 flow [2023-08-30 15:44:07,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 1248 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-30 15:44:07,637 INFO L231 Difference]: Finished difference. Result has 100 places, 137 transitions, 938 flow [2023-08-30 15:44:07,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=100, PETRI_TRANSITIONS=137} [2023-08-30 15:44:07,638 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-08-30 15:44:07,638 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 137 transitions, 938 flow [2023-08-30 15:44:07,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:07,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:44:07,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:44:07,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:44:07,639 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:44:07,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:44:07,640 INFO L85 PathProgramCache]: Analyzing trace with hash 303446704, now seen corresponding path program 1 times [2023-08-30 15:44:07,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:44:07,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672488167] [2023-08-30 15:44:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:44:07,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:44:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:44:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:44:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:44:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672488167] [2023-08-30 15:44:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672488167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:44:07,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:44:07,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:44:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27861474] [2023-08-30 15:44:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:44:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:44:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:44:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:44:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:44:07,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-08-30 15:44:07,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:07,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:44:07,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-08-30 15:44:07,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:44:19,965 INFO L130 PetriNetUnfolder]: 75340/115484 cut-off events. [2023-08-30 15:44:19,965 INFO L131 PetriNetUnfolder]: For 18611/18611 co-relation queries the response was YES. [2023-08-30 15:44:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289009 conditions, 115484 events. 75340/115484 cut-off events. For 18611/18611 co-relation queries the response was YES. Maximal size of possible extension queue 5679. Compared 1051329 event pairs, 60060 based on Foata normal form. 0/88412 useless extension candidates. Maximal degree in co-relation 288978. Up to 114560 conditions per place. [2023-08-30 15:44:20,821 INFO L137 encePairwiseOnDemand]: 882/884 looper letters, 133 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2023-08-30 15:44:20,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1204 flow [2023-08-30 15:44:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:44:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:44:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2023-08-30 15:44:20,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43288084464555054 [2023-08-30 15:44:20,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2023-08-30 15:44:20,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2023-08-30 15:44:20,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:44:20,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2023-08-30 15:44:20,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:20,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:20,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:20,831 INFO L175 Difference]: Start difference. First operand has 100 places, 137 transitions, 938 flow. Second operand 3 states and 1148 transitions. [2023-08-30 15:44:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1204 flow [2023-08-30 15:44:20,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 1202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:44:20,986 INFO L231 Difference]: Finished difference. Result has 100 places, 136 transitions, 936 flow [2023-08-30 15:44:20,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=100, PETRI_TRANSITIONS=136} [2023-08-30 15:44:20,987 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-08-30 15:44:20,987 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 136 transitions, 936 flow [2023-08-30 15:44:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:20,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:44:20,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:44:20,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:44:20,988 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:44:20,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:44:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 303446705, now seen corresponding path program 1 times [2023-08-30 15:44:20,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:44:20,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811322602] [2023-08-30 15:44:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:44:20,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:44:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:44:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:44:21,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:44:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811322602] [2023-08-30 15:44:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811322602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:44:21,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:44:21,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:44:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516720331] [2023-08-30 15:44:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:44:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:44:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:44:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:44:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:44:21,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-08-30 15:44:21,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 136 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:21,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:44:21,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-08-30 15:44:21,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:44:35,093 INFO L130 PetriNetUnfolder]: 89948/132072 cut-off events. [2023-08-30 15:44:35,093 INFO L131 PetriNetUnfolder]: For 23913/24837 co-relation queries the response was YES. [2023-08-30 15:44:35,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327554 conditions, 132072 events. 89948/132072 cut-off events. For 23913/24837 co-relation queries the response was YES. Maximal size of possible extension queue 5565. Compared 1084598 event pairs, 25740 based on Foata normal form. 132/101172 useless extension candidates. Maximal degree in co-relation 327522. Up to 90553 conditions per place. [2023-08-30 15:44:36,049 INFO L137 encePairwiseOnDemand]: 877/884 looper letters, 139 selfloop transitions, 4 changer transitions 3/148 dead transitions. [2023-08-30 15:44:36,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 148 transitions, 1260 flow [2023-08-30 15:44:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:44:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:44:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1163 transitions. [2023-08-30 15:44:36,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385369532428356 [2023-08-30 15:44:36,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1163 transitions. [2023-08-30 15:44:36,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1163 transitions. [2023-08-30 15:44:36,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:44:36,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1163 transitions. [2023-08-30 15:44:36,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:36,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:36,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:36,058 INFO L175 Difference]: Start difference. First operand has 100 places, 136 transitions, 936 flow. Second operand 3 states and 1163 transitions. [2023-08-30 15:44:36,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 148 transitions, 1260 flow [2023-08-30 15:44:36,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 148 transitions, 1259 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:44:36,147 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 953 flow [2023-08-30 15:44:36,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=953, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2023-08-30 15:44:36,148 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2023-08-30 15:44:36,148 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 953 flow [2023-08-30 15:44:36,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:36,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:44:36,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:44:36,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:44:36,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:44:36,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:44:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash 821990299, now seen corresponding path program 1 times [2023-08-30 15:44:36,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:44:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301925093] [2023-08-30 15:44:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:44:36,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:44:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:44:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:44:36,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:44:36,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301925093] [2023-08-30 15:44:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301925093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:44:36,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:44:36,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:44:36,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130739653] [2023-08-30 15:44:36,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:44:36,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:44:36,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:44:36,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:44:36,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:44:36,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 15:44:36,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 953 flow. Second operand has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:36,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:44:36,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 15:44:36,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:44:47,499 INFO L130 PetriNetUnfolder]: 69092/107190 cut-off events. [2023-08-30 15:44:47,499 INFO L131 PetriNetUnfolder]: For 60763/60763 co-relation queries the response was YES. [2023-08-30 15:44:48,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291718 conditions, 107190 events. 69092/107190 cut-off events. For 60763/60763 co-relation queries the response was YES. Maximal size of possible extension queue 5182. Compared 976053 event pairs, 54252 based on Foata normal form. 0/98004 useless extension candidates. Maximal degree in co-relation 291684. Up to 106228 conditions per place. [2023-08-30 15:44:48,369 INFO L137 encePairwiseOnDemand]: 882/884 looper letters, 126 selfloop transitions, 7 changer transitions 0/135 dead transitions. [2023-08-30 15:44:48,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 135 transitions, 1215 flow [2023-08-30 15:44:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:44:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:44:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1150 transitions. [2023-08-30 15:44:48,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336349924585219 [2023-08-30 15:44:48,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1150 transitions. [2023-08-30 15:44:48,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1150 transitions. [2023-08-30 15:44:48,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:44:48,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1150 transitions. [2023-08-30 15:44:48,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.3333333333333) internal successors, (1150), 3 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:48,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:48,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 884.0) internal successors, (3536), 4 states have internal predecessors, (3536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:48,381 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 953 flow. Second operand 3 states and 1150 transitions. [2023-08-30 15:44:48,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 135 transitions, 1215 flow [2023-08-30 15:44:48,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 135 transitions, 1207 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:44:48,539 INFO L231 Difference]: Finished difference. Result has 101 places, 135 transitions, 955 flow [2023-08-30 15:44:48,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=955, PETRI_PLACES=101, PETRI_TRANSITIONS=135} [2023-08-30 15:44:48,540 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 43 predicate places. [2023-08-30 15:44:48,540 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 135 transitions, 955 flow [2023-08-30 15:44:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:48,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:44:48,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:44:48,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:44:48,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:44:48,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:44:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash 821990301, now seen corresponding path program 1 times [2023-08-30 15:44:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:44:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660305344] [2023-08-30 15:44:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:44:48,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:44:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:44:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:44:48,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:44:48,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660305344] [2023-08-30 15:44:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660305344] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:44:48,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510092437] [2023-08-30 15:44:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:44:48,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:44:48,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:44:48,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:44:48,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:44:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:44:48,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:44:48,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:44:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:44:48,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:44:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:44:48,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510092437] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:44:48,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:44:48,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:44:48,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831655230] [2023-08-30 15:44:48,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:44:48,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:44:48,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:44:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:44:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:44:48,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 884 [2023-08-30 15:44:48,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 135 transitions, 955 flow. Second operand has 7 states, 7 states have (on average 372.42857142857144) internal successors, (2607), 7 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:44:48,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:44:48,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 884 [2023-08-30 15:44:48,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:45:18,355 INFO L130 PetriNetUnfolder]: 172580/267522 cut-off events. [2023-08-30 15:45:18,356 INFO L131 PetriNetUnfolder]: For 113156/113156 co-relation queries the response was YES. [2023-08-30 15:45:19,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701679 conditions, 267522 events. 172580/267522 cut-off events. For 113156/113156 co-relation queries the response was YES. Maximal size of possible extension queue 11209. Compared 2638869 event pairs, 135630 based on Foata normal form. 0/245466 useless extension candidates. Maximal degree in co-relation 701646. Up to 73921 conditions per place. [2023-08-30 15:45:20,705 INFO L137 encePairwiseOnDemand]: 881/884 looper letters, 325 selfloop transitions, 11 changer transitions 0/338 dead transitions. [2023-08-30 15:45:20,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 338 transitions, 2951 flow [2023-08-30 15:45:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:45:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:45:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2366 transitions. [2023-08-30 15:45:20,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44607843137254904 [2023-08-30 15:45:20,710 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2366 transitions. [2023-08-30 15:45:20,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2366 transitions. [2023-08-30 15:45:20,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:45:20,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2366 transitions. [2023-08-30 15:45:20,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 394.3333333333333) internal successors, (2366), 6 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:20,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:20,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 884.0) internal successors, (6188), 7 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:20,717 INFO L175 Difference]: Start difference. First operand has 101 places, 135 transitions, 955 flow. Second operand 6 states and 2366 transitions. [2023-08-30 15:45:20,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 338 transitions, 2951 flow [2023-08-30 15:45:21,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 338 transitions, 2944 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:45:21,716 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 996 flow [2023-08-30 15:45:21,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=884, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=996, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2023-08-30 15:45:21,717 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2023-08-30 15:45:21,717 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 996 flow [2023-08-30 15:45:21,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 372.42857142857144) internal successors, (2607), 7 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:21,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:45:21,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 15:45:21,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:45:21,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:45:21,923 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-08-30 15:45:21,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:45:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash 504768093, now seen corresponding path program 2 times [2023-08-30 15:45:21,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:45:21,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968984526] [2023-08-30 15:45:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:21,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:45:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:45:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:45:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968984526] [2023-08-30 15:45:21,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968984526] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:45:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014870191] [2023-08-30 15:45:21,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:45:21,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:45:21,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:45:22,000 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:45:22,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:45:22,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:45:22,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:45:22,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:45:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:45:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:45:22,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:45:22,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014870191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:45:22,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:45:22,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-30 15:45:22,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981823497] [2023-08-30 15:45:22,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:45:22,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:45:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:45:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:45:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:45:22,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 369 out of 884 [2023-08-30 15:45:22,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 996 flow. Second operand has 4 states, 4 states have (on average 370.75) internal successors, (1483), 4 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:22,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:45:22,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 369 of 884 [2023-08-30 15:45:22,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand