./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.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 a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:38:05,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:38:05,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:38:05,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:38:05,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:38:05,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:38:05,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:38:05,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:38:05,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:38:05,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:38:05,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:38:05,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:38:05,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:38:05,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:38:05,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:38:05,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:38:05,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:38:05,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:38:05,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:38:05,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:38:05,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:38:05,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:38:05,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:38:05,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:38:05,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:38:05,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:38:05,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:38:05,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:38:05,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:38:05,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:38:05,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:38:05,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:38:05,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:38:05,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:38:05,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:38:05,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:38:05,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:38:05,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:38:05,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:38:05,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:38:05,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:38:05,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:38:05,903 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:38:05,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:38:05,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:38:05,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:38:05,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:38:05,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:38:05,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:38:05,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:38:05,906 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:38:05,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:38:05,907 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:38:05,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:38:05,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:38:05,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:38:05,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:38:05,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:38:05,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:38:05,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:38:05,908 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:38:05,908 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:38:05,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:38:05,908 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:38:05,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:38:05,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:38:05,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:38:05,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:38:05,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:38:05,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:38:05,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:38:05,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:38:05,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:38:05,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:38:05,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:38:05,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:38:05,911 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:38:05,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:38:05,911 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:38:05,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:38:06,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:38:06,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:38:06,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:38:06,239 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:38:06,239 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:38:06,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-09-01 08:38:07,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:38:07,650 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:38:07,650 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-09-01 08:38:07,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc9cd40e/ad1e1940f44e444bbbd8fc6f40c9d90a/FLAG92b59e21c [2023-09-01 08:38:07,671 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc9cd40e/ad1e1940f44e444bbbd8fc6f40c9d90a [2023-09-01 08:38:07,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:38:07,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:38:07,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:38:07,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:38:07,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:38:07,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35144fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07, skipping insertion in model container [2023-09-01 08:38:07,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:38:07,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:38:07,822 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/test-easy11.wvr.c[2005,2018] [2023-09-01 08:38:07,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:38:07,830 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:38:07,852 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/test-easy11.wvr.c[2005,2018] [2023-09-01 08:38:07,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:38:07,859 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:38:07,859 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:38:07,864 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:38:07,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07 WrapperNode [2023-09-01 08:38:07,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:38:07,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:38:07,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:38:07,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:38:07,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,898 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-09-01 08:38:07,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:38:07,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:38:07,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:38:07,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:38:07,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,938 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:38:07,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:38:07,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:38:07,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:38:07,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (1/1) ... [2023-09-01 08:38:07,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:38:07,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:07,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:38:07,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:38:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:38:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:38:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:38:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:38:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:38:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:38:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:38:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:38:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:38:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:38:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:38:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:38:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:38:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:38:08,024 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:38:08,121 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:38:08,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:38:08,351 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:38:08,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:38:08,374 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 08:38:08,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:38:08 BoogieIcfgContainer [2023-09-01 08:38:08,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:38:08,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:38:08,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:38:08,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:38:08,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:38:07" (1/3) ... [2023-09-01 08:38:08,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1059e73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:38:08, skipping insertion in model container [2023-09-01 08:38:08,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:38:07" (2/3) ... [2023-09-01 08:38:08,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1059e73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:38:08, skipping insertion in model container [2023-09-01 08:38:08,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:38:08" (3/3) ... [2023-09-01 08:38:08,382 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-09-01 08:38:08,388 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:38:08,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:38:08,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 08:38:08,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:38:08,480 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:38:08,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2023-09-01 08:38:08,560 INFO L130 PetriNetUnfolder]: 6/89 cut-off events. [2023-09-01 08:38:08,560 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:38:08,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-09-01 08:38:08,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 198 flow [2023-09-01 08:38:08,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 155 flow [2023-09-01 08:38:08,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:38:08,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 73 transitions, 155 flow [2023-09-01 08:38:08,579 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 73 transitions, 155 flow [2023-09-01 08:38:08,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 155 flow [2023-09-01 08:38:08,598 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-09-01 08:38:08,598 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:38:08,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 73 events. 5/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-09-01 08:38:08,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2023-09-01 08:38:11,006 INFO L134 LiptonReduction]: Checked pairs total: 1018 [2023-09-01 08:38:11,006 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-09-01 08:38:11,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:38:11,023 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;@ccc8178, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:38:11,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 08:38:11,026 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-09-01 08:38:11,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:38:11,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:11,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:38:11,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:11,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash 10735871, now seen corresponding path program 1 times [2023-09-01 08:38:11,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358814996] [2023-09-01 08:38:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:11,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:11,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358814996] [2023-09-01 08:38:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358814996] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:38:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586517890] [2023-09-01 08:38:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:11,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 08:38:11,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:11,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 08:38:11,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 08:38:11,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-09-01 08:38:11,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 51 flow. Second operand has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:11,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-09-01 08:38:11,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:11,311 INFO L130 PetriNetUnfolder]: 133/230 cut-off events. [2023-09-01 08:38:11,311 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-09-01 08:38:11,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 230 events. 133/230 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 759 event pairs, 105 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 420. Up to 231 conditions per place. [2023-09-01 08:38:11,316 INFO L137 encePairwiseOnDemand]: 155/157 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-09-01 08:38:11,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 85 flow [2023-09-01 08:38:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 08:38:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 08:38:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 177 transitions. [2023-09-01 08:38:11,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636942675159236 [2023-09-01 08:38:11,330 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 177 transitions. [2023-09-01 08:38:11,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 177 transitions. [2023-09-01 08:38:11,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:11,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 177 transitions. [2023-09-01 08:38:11,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,343 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,345 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 2 states and 177 transitions. [2023-09-01 08:38:11,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 85 flow [2023-09-01 08:38:11,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:38:11,348 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2023-09-01 08:38:11,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2023-09-01 08:38:11,354 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -4 predicate places. [2023-09-01 08:38:11,354 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2023-09-01 08:38:11,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.0) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:11,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:38:11,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:38:11,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:11,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash 10735884, now seen corresponding path program 1 times [2023-09-01 08:38:11,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:11,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019786541] [2023-09-01 08:38:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:11,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:11,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019786541] [2023-09-01 08:38:11,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019786541] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:11,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:11,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:38:11,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207662684] [2023-09-01 08:38:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:11,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:38:11,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:11,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:38:11,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:38:11,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 157 [2023-09-01 08:38:11,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:11,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 157 [2023-09-01 08:38:11,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:11,691 INFO L130 PetriNetUnfolder]: 84/151 cut-off events. [2023-09-01 08:38:11,692 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:38:11,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 151 events. 84/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 499 event pairs, 7 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 311. Up to 78 conditions per place. [2023-09-01 08:38:11,693 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 32 selfloop transitions, 5 changer transitions 2/39 dead transitions. [2023-09-01 08:38:11,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 39 transitions, 164 flow [2023-09-01 08:38:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:38:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:38:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2023-09-01 08:38:11,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207006369426752 [2023-09-01 08:38:11,696 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 327 transitions. [2023-09-01 08:38:11,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 327 transitions. [2023-09-01 08:38:11,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:11,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 327 transitions. [2023-09-01 08:38:11,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,700 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 42 flow. Second operand 4 states and 327 transitions. [2023-09-01 08:38:11,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 39 transitions, 164 flow [2023-09-01 08:38:11,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:38:11,702 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 72 flow [2023-09-01 08:38:11,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-09-01 08:38:11,703 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-09-01 08:38:11,703 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 72 flow [2023-09-01 08:38:11,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:11,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:38:11,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:38:11,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:11,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:11,704 INFO L85 PathProgramCache]: Analyzing trace with hash 10735870, now seen corresponding path program 1 times [2023-09-01 08:38:11,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:11,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144002017] [2023-09-01 08:38:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:11,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:11,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144002017] [2023-09-01 08:38:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144002017] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:11,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:11,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:38:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564749520] [2023-09-01 08:38:11,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:11,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:38:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:38:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:38:11,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 157 [2023-09-01 08:38:11,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:11,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 157 [2023-09-01 08:38:11,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:11,812 INFO L130 PetriNetUnfolder]: 62/113 cut-off events. [2023-09-01 08:38:11,812 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-09-01 08:38:11,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 113 events. 62/113 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 317 event pairs, 6 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 296. Up to 94 conditions per place. [2023-09-01 08:38:11,813 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 24 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-09-01 08:38:11,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 140 flow [2023-09-01 08:38:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:38:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:38:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-09-01 08:38:11,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015923566878981 [2023-09-01 08:38:11,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-09-01 08:38:11,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-09-01 08:38:11,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:11,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-09-01 08:38:11,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,820 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 72 flow. Second operand 4 states and 315 transitions. [2023-09-01 08:38:11,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 140 flow [2023-09-01 08:38:11,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:38:11,821 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 72 flow [2023-09-01 08:38:11,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-09-01 08:38:11,822 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-09-01 08:38:11,823 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 72 flow [2023-09-01 08:38:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:11,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:38:11,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:38:11,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:11,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1728787494, now seen corresponding path program 1 times [2023-09-01 08:38:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:11,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267356939] [2023-09-01 08:38:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:11,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:11,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267356939] [2023-09-01 08:38:11,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267356939] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:11,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:11,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:38:11,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077506817] [2023-09-01 08:38:11,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:11,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:38:11,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:38:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:38:11,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 157 [2023-09-01 08:38:11,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:11,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:11,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 157 [2023-09-01 08:38:11,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:12,011 INFO L130 PetriNetUnfolder]: 54/101 cut-off events. [2023-09-01 08:38:12,012 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-09-01 08:38:12,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 101 events. 54/101 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 249 event pairs, 11 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 263. Up to 62 conditions per place. [2023-09-01 08:38:12,017 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-09-01 08:38:12,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 166 flow [2023-09-01 08:38:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:38:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:38:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-09-01 08:38:12,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015923566878981 [2023-09-01 08:38:12,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-09-01 08:38:12,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-09-01 08:38:12,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:12,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-09-01 08:38:12,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,026 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 72 flow. Second operand 4 states and 315 transitions. [2023-09-01 08:38:12,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 166 flow [2023-09-01 08:38:12,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:38:12,028 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 97 flow [2023-09-01 08:38:12,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-09-01 08:38:12,029 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-09-01 08:38:12,030 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 97 flow [2023-09-01 08:38:12,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:12,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:38:12,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:38:12,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:12,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1728787485, now seen corresponding path program 1 times [2023-09-01 08:38:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883930056] [2023-09-01 08:38:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883930056] [2023-09-01 08:38:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883930056] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:12,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:38:12,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108725978] [2023-09-01 08:38:12,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:12,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:38:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:38:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:38:12,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 157 [2023-09-01 08:38:12,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:12,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 157 [2023-09-01 08:38:12,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:12,179 INFO L130 PetriNetUnfolder]: 43/82 cut-off events. [2023-09-01 08:38:12,179 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 08:38:12,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 82 events. 43/82 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 6 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 253. Up to 57 conditions per place. [2023-09-01 08:38:12,180 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 23 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-09-01 08:38:12,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 163 flow [2023-09-01 08:38:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:38:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:38:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-09-01 08:38:12,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968152866242038 [2023-09-01 08:38:12,182 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-09-01 08:38:12,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-09-01 08:38:12,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:12,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-09-01 08:38:12,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,186 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 97 flow. Second operand 4 states and 312 transitions. [2023-09-01 08:38:12,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 163 flow [2023-09-01 08:38:12,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:38:12,188 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 96 flow [2023-09-01 08:38:12,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-09-01 08:38:12,189 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-09-01 08:38:12,189 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 96 flow [2023-09-01 08:38:12,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:12,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:12,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:38:12,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:12,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2043019224, now seen corresponding path program 1 times [2023-09-01 08:38:12,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:12,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478537932] [2023-09-01 08:38:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:12,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:12,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478537932] [2023-09-01 08:38:12,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478537932] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:12,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:12,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:38:12,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165411302] [2023-09-01 08:38:12,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:38:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:38:12,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:38:12,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-09-01 08:38:12,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:12,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-09-01 08:38:12,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:12,300 INFO L130 PetriNetUnfolder]: 39/72 cut-off events. [2023-09-01 08:38:12,301 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2023-09-01 08:38:12,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 72 events. 39/72 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 11 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 222. Up to 42 conditions per place. [2023-09-01 08:38:12,301 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 19 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2023-09-01 08:38:12,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 146 flow [2023-09-01 08:38:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:38:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:38:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-09-01 08:38:12,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286624203821656 [2023-09-01 08:38:12,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-09-01 08:38:12,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-09-01 08:38:12,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:12,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-09-01 08:38:12,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,306 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,307 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 96 flow. Second operand 4 states and 332 transitions. [2023-09-01 08:38:12,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 146 flow [2023-09-01 08:38:12,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:38:12,308 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 92 flow [2023-09-01 08:38:12,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-09-01 08:38:12,309 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-09-01 08:38:12,309 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 92 flow [2023-09-01 08:38:12,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:12,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:38:12,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:12,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2041347085, now seen corresponding path program 1 times [2023-09-01 08:38:12,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:12,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956215235] [2023-09-01 08:38:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956215235] [2023-09-01 08:38:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956215235] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:12,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:12,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:38:12,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852167432] [2023-09-01 08:38:12,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:12,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:38:12,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:12,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:38:12,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:38:12,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-09-01 08:38:12,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:12,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-09-01 08:38:12,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:12,557 INFO L130 PetriNetUnfolder]: 42/79 cut-off events. [2023-09-01 08:38:12,558 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-09-01 08:38:12,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 79 events. 42/79 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 2 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 246. Up to 29 conditions per place. [2023-09-01 08:38:12,559 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 27 selfloop transitions, 11 changer transitions 0/38 dead transitions. [2023-09-01 08:38:12,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 221 flow [2023-09-01 08:38:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:38:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:38:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 551 transitions. [2023-09-01 08:38:12,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43869426751592355 [2023-09-01 08:38:12,562 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 551 transitions. [2023-09-01 08:38:12,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 551 transitions. [2023-09-01 08:38:12,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:12,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 551 transitions. [2023-09-01 08:38:12,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.875) internal successors, (551), 8 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,582 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,582 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 92 flow. Second operand 8 states and 551 transitions. [2023-09-01 08:38:12,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 221 flow [2023-09-01 08:38:12,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 215 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:38:12,584 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 130 flow [2023-09-01 08:38:12,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-09-01 08:38:12,585 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-09-01 08:38:12,585 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 130 flow [2023-09-01 08:38:12,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:12,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:12,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:38:12,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:12,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:12,587 INFO L85 PathProgramCache]: Analyzing trace with hash -787943001, now seen corresponding path program 2 times [2023-09-01 08:38:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:12,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547090232] [2023-09-01 08:38:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:12,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547090232] [2023-09-01 08:38:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547090232] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:12,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:38:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235464279] [2023-09-01 08:38:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:12,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:38:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:38:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:38:12,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-09-01 08:38:12,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:12,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-09-01 08:38:12,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:12,850 INFO L130 PetriNetUnfolder]: 52/95 cut-off events. [2023-09-01 08:38:12,850 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-09-01 08:38:12,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 95 events. 52/95 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 4 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 344. Up to 56 conditions per place. [2023-09-01 08:38:12,851 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 29 selfloop transitions, 14 changer transitions 0/43 dead transitions. [2023-09-01 08:38:12,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 285 flow [2023-09-01 08:38:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:38:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:38:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2023-09-01 08:38:12,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44187898089171973 [2023-09-01 08:38:12,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2023-09-01 08:38:12,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2023-09-01 08:38:12,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:12,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2023-09-01 08:38:12,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,858 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 130 flow. Second operand 8 states and 555 transitions. [2023-09-01 08:38:12,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 285 flow [2023-09-01 08:38:12,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 251 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-09-01 08:38:12,860 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 167 flow [2023-09-01 08:38:12,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-09-01 08:38:12,861 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-09-01 08:38:12,861 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 167 flow [2023-09-01 08:38:12,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:12,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:12,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:12,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:38:12,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:12,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash -787943030, now seen corresponding path program 1 times [2023-09-01 08:38:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:12,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218673286] [2023-09-01 08:38:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:12,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:12,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218673286] [2023-09-01 08:38:12,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218673286] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:12,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:12,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:38:12,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914969362] [2023-09-01 08:38:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:12,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:38:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:12,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:38:12,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:38:13,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 157 [2023-09-01 08:38:13,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:13,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 157 [2023-09-01 08:38:13,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:13,096 INFO L130 PetriNetUnfolder]: 53/98 cut-off events. [2023-09-01 08:38:13,096 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 08:38:13,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 98 events. 53/98 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 236 event pairs, 5 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 391. Up to 61 conditions per place. [2023-09-01 08:38:13,097 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2023-09-01 08:38:13,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 289 flow [2023-09-01 08:38:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:38:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:38:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-09-01 08:38:13,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222929936305734 [2023-09-01 08:38:13,099 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-09-01 08:38:13,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-09-01 08:38:13,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:13,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-09-01 08:38:13,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,103 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,103 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 167 flow. Second operand 6 states and 426 transitions. [2023-09-01 08:38:13,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 289 flow [2023-09-01 08:38:13,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 257 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-09-01 08:38:13,105 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 171 flow [2023-09-01 08:38:13,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-09-01 08:38:13,106 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-09-01 08:38:13,106 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 171 flow [2023-09-01 08:38:13,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:13,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:13,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:38:13,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:13,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash -787546850, now seen corresponding path program 2 times [2023-09-01 08:38:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:13,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126694524] [2023-09-01 08:38:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:13,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:13,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126694524] [2023-09-01 08:38:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126694524] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:13,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:13,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:38:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951176902] [2023-09-01 08:38:13,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:13,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:38:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:38:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:38:13,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-09-01 08:38:13,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:13,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-09-01 08:38:13,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:13,298 INFO L130 PetriNetUnfolder]: 54/101 cut-off events. [2023-09-01 08:38:13,298 INFO L131 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2023-09-01 08:38:13,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 101 events. 54/101 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 252 event pairs, 4 based on Foata normal form. 2/101 useless extension candidates. Maximal degree in co-relation 401. Up to 46 conditions per place. [2023-09-01 08:38:13,299 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 30 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2023-09-01 08:38:13,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 315 flow [2023-09-01 08:38:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:38:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:38:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 549 transitions. [2023-09-01 08:38:13,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43710191082802546 [2023-09-01 08:38:13,301 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 549 transitions. [2023-09-01 08:38:13,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 549 transitions. [2023-09-01 08:38:13,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:13,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 549 transitions. [2023-09-01 08:38:13,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,305 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,305 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 171 flow. Second operand 8 states and 549 transitions. [2023-09-01 08:38:13,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 315 flow [2023-09-01 08:38:13,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 287 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-09-01 08:38:13,307 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 181 flow [2023-09-01 08:38:13,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=181, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-09-01 08:38:13,308 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2023-09-01 08:38:13,308 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 181 flow [2023-09-01 08:38:13,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:13,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:13,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:38:13,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:13,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash -787597041, now seen corresponding path program 3 times [2023-09-01 08:38:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271827457] [2023-09-01 08:38:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:13,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271827457] [2023-09-01 08:38:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271827457] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:38:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242265687] [2023-09-01 08:38:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:38:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:38:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:38:13,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 157 [2023-09-01 08:38:13,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:13,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 157 [2023-09-01 08:38:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:13,541 INFO L130 PetriNetUnfolder]: 64/117 cut-off events. [2023-09-01 08:38:13,542 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2023-09-01 08:38:13,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 117 events. 64/117 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 293 event pairs, 9 based on Foata normal form. 4/119 useless extension candidates. Maximal degree in co-relation 485. Up to 73 conditions per place. [2023-09-01 08:38:13,545 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 30 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2023-09-01 08:38:13,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 355 flow [2023-09-01 08:38:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:38:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:38:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-09-01 08:38:13,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45222929936305734 [2023-09-01 08:38:13,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-09-01 08:38:13,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-09-01 08:38:13,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:13,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-09-01 08:38:13,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,551 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,552 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 181 flow. Second operand 6 states and 426 transitions. [2023-09-01 08:38:13,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 355 flow [2023-09-01 08:38:13,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 321 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-09-01 08:38:13,558 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 233 flow [2023-09-01 08:38:13,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-09-01 08:38:13,560 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-09-01 08:38:13,561 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 233 flow [2023-09-01 08:38:13,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:13,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:13,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 08:38:13,561 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:13,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash -787597070, now seen corresponding path program 3 times [2023-09-01 08:38:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:13,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796852727] [2023-09-01 08:38:13,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:13,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:13,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:13,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796852727] [2023-09-01 08:38:13,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796852727] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:13,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:13,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:38:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073247781] [2023-09-01 08:38:13,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:13,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:38:13,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:38:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:38:13,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-09-01 08:38:13,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:13,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-09-01 08:38:13,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:13,781 INFO L130 PetriNetUnfolder]: 65/120 cut-off events. [2023-09-01 08:38:13,781 INFO L131 PetriNetUnfolder]: For 299/299 co-relation queries the response was YES. [2023-09-01 08:38:13,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 120 events. 65/120 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 317 event pairs, 6 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 535. Up to 78 conditions per place. [2023-09-01 08:38:13,782 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 33 selfloop transitions, 16 changer transitions 0/49 dead transitions. [2023-09-01 08:38:13,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 409 flow [2023-09-01 08:38:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:38:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:38:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 553 transitions. [2023-09-01 08:38:13,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44028662420382164 [2023-09-01 08:38:13,793 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 553 transitions. [2023-09-01 08:38:13,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 553 transitions. [2023-09-01 08:38:13,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:13,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 553 transitions. [2023-09-01 08:38:13,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,797 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 233 flow. Second operand 8 states and 553 transitions. [2023-09-01 08:38:13,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 409 flow [2023-09-01 08:38:13,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 372 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-09-01 08:38:13,799 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 244 flow [2023-09-01 08:38:13,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-09-01 08:38:13,800 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-09-01 08:38:13,800 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 244 flow [2023-09-01 08:38:13,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:13,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:13,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:38:13,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:13,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1344811048, now seen corresponding path program 1 times [2023-09-01 08:38:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:13,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901215350] [2023-09-01 08:38:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:13,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:13,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901215350] [2023-09-01 08:38:13,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901215350] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:13,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:13,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791173541] [2023-09-01 08:38:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:13,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:13,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:13,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:13,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:13,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:13,949 INFO L130 PetriNetUnfolder]: 102/193 cut-off events. [2023-09-01 08:38:13,950 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2023-09-01 08:38:13,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 193 events. 102/193 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 649 event pairs, 14 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 857. Up to 78 conditions per place. [2023-09-01 08:38:13,951 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 42 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2023-09-01 08:38:13,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 577 flow [2023-09-01 08:38:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:38:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:38:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2023-09-01 08:38:13,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45950864422202004 [2023-09-01 08:38:13,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 505 transitions. [2023-09-01 08:38:13,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 505 transitions. [2023-09-01 08:38:13,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:13,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 505 transitions. [2023-09-01 08:38:13,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,957 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 244 flow. Second operand 7 states and 505 transitions. [2023-09-01 08:38:13,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 577 flow [2023-09-01 08:38:13,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 522 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-09-01 08:38:13,960 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 378 flow [2023-09-01 08:38:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-09-01 08:38:13,961 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2023-09-01 08:38:13,961 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 378 flow [2023-09-01 08:38:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:13,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:13,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:13,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:38:13,962 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:13,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1343574150, now seen corresponding path program 1 times [2023-09-01 08:38:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:13,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752434446] [2023-09-01 08:38:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:13,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:13,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752434446] [2023-09-01 08:38:13,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752434446] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:13,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:13,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380418250] [2023-09-01 08:38:13,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:13,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:13,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:14,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:14,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:14,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:14,121 INFO L130 PetriNetUnfolder]: 106/197 cut-off events. [2023-09-01 08:38:14,121 INFO L131 PetriNetUnfolder]: For 851/851 co-relation queries the response was YES. [2023-09-01 08:38:14,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 197 events. 106/197 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 655 event pairs, 6 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 990. Up to 133 conditions per place. [2023-09-01 08:38:14,124 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-09-01 08:38:14,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 580 flow [2023-09-01 08:38:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:38:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:38:14,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-09-01 08:38:14,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467515923566879 [2023-09-01 08:38:14,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-09-01 08:38:14,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-09-01 08:38:14,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:14,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-09-01 08:38:14,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,129 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 378 flow. Second operand 5 states and 367 transitions. [2023-09-01 08:38:14,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 580 flow [2023-09-01 08:38:14,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 552 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-09-01 08:38:14,145 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 399 flow [2023-09-01 08:38:14,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-09-01 08:38:14,146 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2023-09-01 08:38:14,146 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 399 flow [2023-09-01 08:38:14,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:14,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:14,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 08:38:14,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:14,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1343570430, now seen corresponding path program 2 times [2023-09-01 08:38:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:14,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032941774] [2023-09-01 08:38:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:14,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:14,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:14,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032941774] [2023-09-01 08:38:14,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032941774] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:14,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:14,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290638965] [2023-09-01 08:38:14,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:14,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:14,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:14,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:14,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:14,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:14,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:14,313 INFO L130 PetriNetUnfolder]: 112/215 cut-off events. [2023-09-01 08:38:14,314 INFO L131 PetriNetUnfolder]: For 1074/1074 co-relation queries the response was YES. [2023-09-01 08:38:14,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 215 events. 112/215 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 764 event pairs, 10 based on Foata normal form. 4/219 useless extension candidates. Maximal degree in co-relation 1104. Up to 84 conditions per place. [2023-09-01 08:38:14,316 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 42 selfloop transitions, 18 changer transitions 2/62 dead transitions. [2023-09-01 08:38:14,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 640 flow [2023-09-01 08:38:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:38:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:38:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-09-01 08:38:14,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596602972399151 [2023-09-01 08:38:14,318 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-09-01 08:38:14,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-09-01 08:38:14,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:14,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-09-01 08:38:14,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,321 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 399 flow. Second operand 6 states and 433 transitions. [2023-09-01 08:38:14,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 640 flow [2023-09-01 08:38:14,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 602 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-09-01 08:38:14,326 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 416 flow [2023-09-01 08:38:14,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-09-01 08:38:14,327 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-09-01 08:38:14,327 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 416 flow [2023-09-01 08:38:14,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:14,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:14,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 08:38:14,328 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:14,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:14,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1343573218, now seen corresponding path program 2 times [2023-09-01 08:38:14,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:14,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680093002] [2023-09-01 08:38:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:14,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:14,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680093002] [2023-09-01 08:38:14,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680093002] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:14,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:14,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:14,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134161520] [2023-09-01 08:38:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:14,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:14,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:14,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:14,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:14,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:14,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:14,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:14,493 INFO L130 PetriNetUnfolder]: 122/233 cut-off events. [2023-09-01 08:38:14,493 INFO L131 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2023-09-01 08:38:14,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 233 events. 122/233 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 842 event pairs, 34 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 1238. Up to 134 conditions per place. [2023-09-01 08:38:14,495 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 52 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2023-09-01 08:38:14,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 684 flow [2023-09-01 08:38:14,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:38:14,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:38:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-09-01 08:38:14,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47388535031847134 [2023-09-01 08:38:14,503 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-09-01 08:38:14,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-09-01 08:38:14,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:14,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-09-01 08:38:14,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,506 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 416 flow. Second operand 5 states and 372 transitions. [2023-09-01 08:38:14,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 684 flow [2023-09-01 08:38:14,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 650 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-09-01 08:38:14,511 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 479 flow [2023-09-01 08:38:14,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-09-01 08:38:14,511 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2023-09-01 08:38:14,511 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 479 flow [2023-09-01 08:38:14,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:14,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:14,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 08:38:14,512 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:14,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1343571358, now seen corresponding path program 3 times [2023-09-01 08:38:14,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:14,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060561861] [2023-09-01 08:38:14,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:14,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060561861] [2023-09-01 08:38:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060561861] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:14,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:14,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99529554] [2023-09-01 08:38:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:14,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:14,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:14,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:14,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:14,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:14,698 INFO L130 PetriNetUnfolder]: 114/221 cut-off events. [2023-09-01 08:38:14,698 INFO L131 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2023-09-01 08:38:14,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 221 events. 114/221 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 798 event pairs, 21 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 1188. Up to 101 conditions per place. [2023-09-01 08:38:14,700 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 49 selfloop transitions, 20 changer transitions 3/72 dead transitions. [2023-09-01 08:38:14,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 741 flow [2023-09-01 08:38:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:38:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:38:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 577 transitions. [2023-09-01 08:38:14,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4593949044585987 [2023-09-01 08:38:14,702 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 577 transitions. [2023-09-01 08:38:14,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 577 transitions. [2023-09-01 08:38:14,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:14,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 577 transitions. [2023-09-01 08:38:14,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,706 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,706 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 479 flow. Second operand 8 states and 577 transitions. [2023-09-01 08:38:14,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 741 flow [2023-09-01 08:38:14,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 726 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:38:14,713 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 510 flow [2023-09-01 08:38:14,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=510, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2023-09-01 08:38:14,713 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-09-01 08:38:14,713 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 510 flow [2023-09-01 08:38:14,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:14,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:14,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 08:38:14,714 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:14,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1355852010, now seen corresponding path program 3 times [2023-09-01 08:38:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:14,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645940879] [2023-09-01 08:38:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:14,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:14,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:14,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645940879] [2023-09-01 08:38:14,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645940879] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:14,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:14,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:14,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135927899] [2023-09-01 08:38:14,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:14,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:14,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:14,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:14,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:14,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:14,878 INFO L130 PetriNetUnfolder]: 146/281 cut-off events. [2023-09-01 08:38:14,878 INFO L131 PetriNetUnfolder]: For 1877/1877 co-relation queries the response was YES. [2023-09-01 08:38:14,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 281 events. 146/281 cut-off events. For 1877/1877 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1102 event pairs, 28 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 1588. Up to 107 conditions per place. [2023-09-01 08:38:14,880 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 50 selfloop transitions, 28 changer transitions 2/80 dead transitions. [2023-09-01 08:38:14,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 935 flow [2023-09-01 08:38:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:38:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:38:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 501 transitions. [2023-09-01 08:38:14,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45586897179253866 [2023-09-01 08:38:14,882 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 501 transitions. [2023-09-01 08:38:14,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 501 transitions. [2023-09-01 08:38:14,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:14,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 501 transitions. [2023-09-01 08:38:14,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,905 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,905 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 510 flow. Second operand 7 states and 501 transitions. [2023-09-01 08:38:14,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 935 flow [2023-09-01 08:38:14,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 881 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-09-01 08:38:14,911 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 703 flow [2023-09-01 08:38:14,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2023-09-01 08:38:14,912 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2023-09-01 08:38:14,912 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 703 flow [2023-09-01 08:38:14,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:14,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:14,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:14,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 08:38:14,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:14,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1354298939, now seen corresponding path program 1 times [2023-09-01 08:38:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:14,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449473381] [2023-09-01 08:38:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:14,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:14,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:14,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449473381] [2023-09-01 08:38:14,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449473381] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439045882] [2023-09-01 08:38:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:14,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:14,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:38:14,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:38:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:15,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:38:15,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:38:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:15,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:38:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:15,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439045882] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:15,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 08:38:15,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-09-01 08:38:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100649126] [2023-09-01 08:38:15,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:15,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:15,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:38:15,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:15,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 703 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:15,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:15,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:15,287 INFO L130 PetriNetUnfolder]: 140/267 cut-off events. [2023-09-01 08:38:15,287 INFO L131 PetriNetUnfolder]: For 2096/2096 co-relation queries the response was YES. [2023-09-01 08:38:15,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 267 events. 140/267 cut-off events. For 2096/2096 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1011 event pairs, 28 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 1602. Up to 156 conditions per place. [2023-09-01 08:38:15,290 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 51 selfloop transitions, 30 changer transitions 0/81 dead transitions. [2023-09-01 08:38:15,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 976 flow [2023-09-01 08:38:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:38:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:38:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 442 transitions. [2023-09-01 08:38:15,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692144373673036 [2023-09-01 08:38:15,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 442 transitions. [2023-09-01 08:38:15,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 442 transitions. [2023-09-01 08:38:15,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:15,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 442 transitions. [2023-09-01 08:38:15,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,296 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 703 flow. Second operand 6 states and 442 transitions. [2023-09-01 08:38:15,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 976 flow [2023-09-01 08:38:15,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 932 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-09-01 08:38:15,303 INFO L231 Difference]: Finished difference. Result has 86 places, 64 transitions, 787 flow [2023-09-01 08:38:15,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=86, PETRI_TRANSITIONS=64} [2023-09-01 08:38:15,304 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 60 predicate places. [2023-09-01 08:38:15,304 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 64 transitions, 787 flow [2023-09-01 08:38:15,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:15,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:15,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:38:15,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:15,510 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:15,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:15,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1354297978, now seen corresponding path program 4 times [2023-09-01 08:38:15,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:15,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121828810] [2023-09-01 08:38:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:15,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121828810] [2023-09-01 08:38:15,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121828810] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:15,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:15,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:15,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462245588] [2023-09-01 08:38:15,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:15,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:15,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:15,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:15,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:15,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 64 transitions, 787 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:15,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:15,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:15,671 INFO L130 PetriNetUnfolder]: 131/248 cut-off events. [2023-09-01 08:38:15,672 INFO L131 PetriNetUnfolder]: For 2008/2008 co-relation queries the response was YES. [2023-09-01 08:38:15,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 248 events. 131/248 cut-off events. For 2008/2008 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 916 event pairs, 10 based on Foata normal form. 4/252 useless extension candidates. Maximal degree in co-relation 1565. Up to 156 conditions per place. [2023-09-01 08:38:15,674 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 55 selfloop transitions, 19 changer transitions 0/74 dead transitions. [2023-09-01 08:38:15,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 74 transitions, 955 flow [2023-09-01 08:38:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:38:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:38:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-09-01 08:38:15,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467515923566879 [2023-09-01 08:38:15,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-09-01 08:38:15,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-09-01 08:38:15,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:15,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-09-01 08:38:15,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,679 INFO L175 Difference]: Start difference. First operand has 86 places, 64 transitions, 787 flow. Second operand 5 states and 367 transitions. [2023-09-01 08:38:15,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 74 transitions, 955 flow [2023-09-01 08:38:15,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 74 transitions, 942 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-09-01 08:38:15,687 INFO L231 Difference]: Finished difference. Result has 90 places, 63 transitions, 789 flow [2023-09-01 08:38:15,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=789, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2023-09-01 08:38:15,688 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2023-09-01 08:38:15,688 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 789 flow [2023-09-01 08:38:15,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:15,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:15,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 08:38:15,689 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:15,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1354295190, now seen corresponding path program 4 times [2023-09-01 08:38:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:15,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127368112] [2023-09-01 08:38:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:15,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:15,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127368112] [2023-09-01 08:38:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127368112] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:15,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:15,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:15,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424919110] [2023-09-01 08:38:15,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:15,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:15,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:15,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:15,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 789 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:15,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:15,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:15,877 INFO L130 PetriNetUnfolder]: 127/240 cut-off events. [2023-09-01 08:38:15,877 INFO L131 PetriNetUnfolder]: For 2000/2000 co-relation queries the response was YES. [2023-09-01 08:38:15,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 240 events. 127/240 cut-off events. For 2000/2000 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 865 event pairs, 20 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 1553. Up to 92 conditions per place. [2023-09-01 08:38:15,880 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 50 selfloop transitions, 27 changer transitions 1/78 dead transitions. [2023-09-01 08:38:15,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 78 transitions, 1012 flow [2023-09-01 08:38:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:38:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:38:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 572 transitions. [2023-09-01 08:38:15,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554140127388535 [2023-09-01 08:38:15,882 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 572 transitions. [2023-09-01 08:38:15,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 572 transitions. [2023-09-01 08:38:15,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:15,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 572 transitions. [2023-09-01 08:38:15,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,885 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 157.0) internal successors, (1413), 9 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,886 INFO L175 Difference]: Start difference. First operand has 90 places, 63 transitions, 789 flow. Second operand 8 states and 572 transitions. [2023-09-01 08:38:15,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 78 transitions, 1012 flow [2023-09-01 08:38:15,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 973 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 08:38:15,894 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 764 flow [2023-09-01 08:38:15,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2023-09-01 08:38:15,894 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 65 predicate places. [2023-09-01 08:38:15,894 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 764 flow [2023-09-01 08:38:15,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:15,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 08:38:15,895 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:15,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1354296118, now seen corresponding path program 5 times [2023-09-01 08:38:15,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:15,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649182168] [2023-09-01 08:38:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:15,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:15,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649182168] [2023-09-01 08:38:15,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649182168] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:15,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:38:15,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:38:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642332343] [2023-09-01 08:38:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:15,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:38:15,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:38:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:38:15,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:15,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:15,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:15,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:15,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:16,055 INFO L130 PetriNetUnfolder]: 112/215 cut-off events. [2023-09-01 08:38:16,055 INFO L131 PetriNetUnfolder]: For 1943/1943 co-relation queries the response was YES. [2023-09-01 08:38:16,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 215 events. 112/215 cut-off events. For 1943/1943 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 750 event pairs, 8 based on Foata normal form. 8/223 useless extension candidates. Maximal degree in co-relation 1405. Up to 106 conditions per place. [2023-09-01 08:38:16,057 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 48 selfloop transitions, 19 changer transitions 4/71 dead transitions. [2023-09-01 08:38:16,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 71 transitions, 946 flow [2023-09-01 08:38:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:38:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:38:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-09-01 08:38:16,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596602972399151 [2023-09-01 08:38:16,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-09-01 08:38:16,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-09-01 08:38:16,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:16,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-09-01 08:38:16,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,082 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,082 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 764 flow. Second operand 6 states and 433 transitions. [2023-09-01 08:38:16,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 71 transitions, 946 flow [2023-09-01 08:38:16,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 71 transitions, 864 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-09-01 08:38:16,090 INFO L231 Difference]: Finished difference. Result has 87 places, 55 transitions, 641 flow [2023-09-01 08:38:16,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=641, PETRI_PLACES=87, PETRI_TRANSITIONS=55} [2023-09-01 08:38:16,091 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-09-01 08:38:16,091 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 55 transitions, 641 flow [2023-09-01 08:38:16,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:16,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:16,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 08:38:16,092 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:16,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1320102062, now seen corresponding path program 1 times [2023-09-01 08:38:16,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:16,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139153331] [2023-09-01 08:38:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:16,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:16,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139153331] [2023-09-01 08:38:16,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139153331] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:16,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257175750] [2023-09-01 08:38:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:16,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:16,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:16,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:38:16,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:38:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:16,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:38:16,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:38:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:16,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:38:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:16,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257175750] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:38:16,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:38:16,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-09-01 08:38:16,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682279595] [2023-09-01 08:38:16,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:38:16,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 08:38:16,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 08:38:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-09-01 08:38:16,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-09-01 08:38:16,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 55 transitions, 641 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:16,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-09-01 08:38:16,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:16,946 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-09-01 08:38:16,947 INFO L131 PetriNetUnfolder]: For 1781/1781 co-relation queries the response was YES. [2023-09-01 08:38:16,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 216 events. 117/216 cut-off events. For 1781/1781 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 741 event pairs, 0 based on Foata normal form. 8/224 useless extension candidates. Maximal degree in co-relation 1345. Up to 57 conditions per place. [2023-09-01 08:38:16,949 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 35 selfloop transitions, 32 changer transitions 28/95 dead transitions. [2023-09-01 08:38:16,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 1069 flow [2023-09-01 08:38:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 08:38:16,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 08:38:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1272 transitions. [2023-09-01 08:38:16,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42641635936976197 [2023-09-01 08:38:16,952 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1272 transitions. [2023-09-01 08:38:16,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1272 transitions. [2023-09-01 08:38:16,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:16,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1272 transitions. [2023-09-01 08:38:16,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.94736842105263) internal successors, (1272), 19 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,959 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,959 INFO L175 Difference]: Start difference. First operand has 87 places, 55 transitions, 641 flow. Second operand 19 states and 1272 transitions. [2023-09-01 08:38:16,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 1069 flow [2023-09-01 08:38:16,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 997 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-09-01 08:38:16,966 INFO L231 Difference]: Finished difference. Result has 96 places, 43 transitions, 527 flow [2023-09-01 08:38:16,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=527, PETRI_PLACES=96, PETRI_TRANSITIONS=43} [2023-09-01 08:38:16,967 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-09-01 08:38:16,967 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 43 transitions, 527 flow [2023-09-01 08:38:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:16,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:16,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:16,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:38:17,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 08:38:17,174 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:17,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1257759387, now seen corresponding path program 1 times [2023-09-01 08:38:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136274411] [2023-09-01 08:38:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136274411] [2023-09-01 08:38:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136274411] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:17,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125682573] [2023-09-01 08:38:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:17,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:17,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:17,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:38:17,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:38:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:17,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:38:17,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:38:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:17,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:38:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:17,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125682573] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:38:17,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:38:17,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-09-01 08:38:17,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106693507] [2023-09-01 08:38:17,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:38:17,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 08:38:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:17,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 08:38:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-09-01 08:38:17,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-09-01 08:38:17,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 43 transitions, 527 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:17,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:17,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-09-01 08:38:17,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:17,820 INFO L130 PetriNetUnfolder]: 84/153 cut-off events. [2023-09-01 08:38:17,820 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2023-09-01 08:38:17,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 153 events. 84/153 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 435 event pairs, 2 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 1008. Up to 61 conditions per place. [2023-09-01 08:38:17,821 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 16 changer transitions 24/66 dead transitions. [2023-09-01 08:38:17,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 66 transitions, 835 flow [2023-09-01 08:38:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:38:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:38:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 800 transitions. [2023-09-01 08:38:17,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42462845010615713 [2023-09-01 08:38:17,823 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 800 transitions. [2023-09-01 08:38:17,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 800 transitions. [2023-09-01 08:38:17,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:17,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 800 transitions. [2023-09-01 08:38:17,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 66.66666666666667) internal successors, (800), 12 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:17,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:17,827 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 157.0) internal successors, (2041), 13 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:17,827 INFO L175 Difference]: Start difference. First operand has 96 places, 43 transitions, 527 flow. Second operand 12 states and 800 transitions. [2023-09-01 08:38:17,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 66 transitions, 835 flow [2023-09-01 08:38:17,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 608 flow, removed 41 selfloop flow, removed 23 redundant places. [2023-09-01 08:38:17,832 INFO L231 Difference]: Finished difference. Result has 74 places, 34 transitions, 306 flow [2023-09-01 08:38:17,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=74, PETRI_TRANSITIONS=34} [2023-09-01 08:38:17,833 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-09-01 08:38:17,833 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 34 transitions, 306 flow [2023-09-01 08:38:17,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:17,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:17,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:17,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:38:18,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:18,039 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:18,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:18,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1298903517, now seen corresponding path program 2 times [2023-09-01 08:38:18,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:18,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116527003] [2023-09-01 08:38:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:18,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:18,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116527003] [2023-09-01 08:38:18,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116527003] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674222210] [2023-09-01 08:38:18,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:38:18,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:18,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:18,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:38:18,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:38:18,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:38:18,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:38:18,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:38:18,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:38:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:18,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:38:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:18,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674222210] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:38:18,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:38:18,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 08:38:18,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873872664] [2023-09-01 08:38:18,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:38:18,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 08:38:18,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:18,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 08:38:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-09-01 08:38:18,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-09-01 08:38:18,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 34 transitions, 306 flow. Second operand has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:18,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:18,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-09-01 08:38:18,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:18,753 INFO L130 PetriNetUnfolder]: 71/144 cut-off events. [2023-09-01 08:38:18,754 INFO L131 PetriNetUnfolder]: For 842/842 co-relation queries the response was YES. [2023-09-01 08:38:18,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 144 events. 71/144 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 455 event pairs, 1 based on Foata normal form. 14/158 useless extension candidates. Maximal degree in co-relation 776. Up to 43 conditions per place. [2023-09-01 08:38:18,755 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 25 selfloop transitions, 31 changer transitions 14/70 dead transitions. [2023-09-01 08:38:18,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 696 flow [2023-09-01 08:38:18,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 08:38:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 08:38:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1257 transitions. [2023-09-01 08:38:18,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213878645658733 [2023-09-01 08:38:18,770 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1257 transitions. [2023-09-01 08:38:18,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1257 transitions. [2023-09-01 08:38:18,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:18,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1257 transitions. [2023-09-01 08:38:18,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.15789473684211) internal successors, (1257), 19 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:18,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:18,782 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:18,782 INFO L175 Difference]: Start difference. First operand has 74 places, 34 transitions, 306 flow. Second operand 19 states and 1257 transitions. [2023-09-01 08:38:18,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 696 flow [2023-09-01 08:38:18,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 631 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-09-01 08:38:18,786 INFO L231 Difference]: Finished difference. Result has 79 places, 41 transitions, 437 flow [2023-09-01 08:38:18,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=437, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2023-09-01 08:38:18,787 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-09-01 08:38:18,787 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 41 transitions, 437 flow [2023-09-01 08:38:18,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.57894736842105) internal successors, (1227), 19 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:18,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:18,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:18,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:38:18,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:18,994 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:18,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:18,995 INFO L85 PathProgramCache]: Analyzing trace with hash -966432237, now seen corresponding path program 3 times [2023-09-01 08:38:18,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:18,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487745957] [2023-09-01 08:38:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:18,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:19,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487745957] [2023-09-01 08:38:19,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487745957] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726834328] [2023-09-01 08:38:19,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:38:19,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:19,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:38:19,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:38:19,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 08:38:19,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:38:19,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:38:19,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:38:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:19,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:38:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726834328] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:38:19,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:38:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-09-01 08:38:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480185774] [2023-09-01 08:38:19,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:38:19,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 08:38:19,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 08:38:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-09-01 08:38:19,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 157 [2023-09-01 08:38:19,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 41 transitions, 437 flow. Second operand has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:19,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:19,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 157 [2023-09-01 08:38:19,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:19,635 INFO L130 PetriNetUnfolder]: 71/148 cut-off events. [2023-09-01 08:38:19,635 INFO L131 PetriNetUnfolder]: For 676/676 co-relation queries the response was YES. [2023-09-01 08:38:19,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 148 events. 71/148 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 471 event pairs, 0 based on Foata normal form. 10/158 useless extension candidates. Maximal degree in co-relation 917. Up to 47 conditions per place. [2023-09-01 08:38:19,637 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 19 changer transitions 22/67 dead transitions. [2023-09-01 08:38:19,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 67 transitions, 802 flow [2023-09-01 08:38:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 08:38:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 08:38:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 990 transitions. [2023-09-01 08:38:19,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42038216560509556 [2023-09-01 08:38:19,639 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 990 transitions. [2023-09-01 08:38:19,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 990 transitions. [2023-09-01 08:38:19,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:19,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 990 transitions. [2023-09-01 08:38:19,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.0) internal successors, (990), 15 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:19,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:19,644 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 157.0) internal successors, (2512), 16 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:19,644 INFO L175 Difference]: Start difference. First operand has 79 places, 41 transitions, 437 flow. Second operand 15 states and 990 transitions. [2023-09-01 08:38:19,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 67 transitions, 802 flow [2023-09-01 08:38:19,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 671 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-09-01 08:38:19,649 INFO L231 Difference]: Finished difference. Result has 82 places, 37 transitions, 364 flow [2023-09-01 08:38:19,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=364, PETRI_PLACES=82, PETRI_TRANSITIONS=37} [2023-09-01 08:38:19,649 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-09-01 08:38:19,650 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 37 transitions, 364 flow [2023-09-01 08:38:19,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.5) internal successors, (1290), 20 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:19,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:19,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:19,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:38:19,856 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,SelfDestructingSolverStorable25 [2023-09-01 08:38:19,856 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:19,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash 954706432, now seen corresponding path program 4 times [2023-09-01 08:38:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:19,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727682453] [2023-09-01 08:38:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:19,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:19,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727682453] [2023-09-01 08:38:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727682453] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:19,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466366914] [2023-09-01 08:38:19,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 08:38:19,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:19,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:19,910 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:38:19,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:38:19,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 08:38:19,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:38:19,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:38:19,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:38:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:19,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:38:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:20,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466366914] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:38:20,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:38:20,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-09-01 08:38:20,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559341320] [2023-09-01 08:38:20,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:38:20,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:38:20,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:38:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:38:20,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 157 [2023-09-01 08:38:20,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 37 transitions, 364 flow. Second operand has 10 states, 10 states have (on average 67.6) internal successors, (676), 10 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:20,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 157 [2023-09-01 08:38:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:20,204 INFO L130 PetriNetUnfolder]: 45/98 cut-off events. [2023-09-01 08:38:20,204 INFO L131 PetriNetUnfolder]: For 497/497 co-relation queries the response was YES. [2023-09-01 08:38:20,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 98 events. 45/98 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 257 event pairs, 8 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 563. Up to 48 conditions per place. [2023-09-01 08:38:20,205 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 27 selfloop transitions, 21 changer transitions 0/48 dead transitions. [2023-09-01 08:38:20,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 48 transitions, 495 flow [2023-09-01 08:38:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 08:38:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 08:38:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 765 transitions. [2023-09-01 08:38:20,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44296467863346844 [2023-09-01 08:38:20,207 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 765 transitions. [2023-09-01 08:38:20,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 765 transitions. [2023-09-01 08:38:20,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:20,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 765 transitions. [2023-09-01 08:38:20,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,211 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 157.0) internal successors, (1884), 12 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,211 INFO L175 Difference]: Start difference. First operand has 82 places, 37 transitions, 364 flow. Second operand 11 states and 765 transitions. [2023-09-01 08:38:20,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 48 transitions, 495 flow [2023-09-01 08:38:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 48 transitions, 432 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-09-01 08:38:20,214 INFO L231 Difference]: Finished difference. Result has 72 places, 36 transitions, 332 flow [2023-09-01 08:38:20,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=332, PETRI_PLACES=72, PETRI_TRANSITIONS=36} [2023-09-01 08:38:20,215 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-09-01 08:38:20,215 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 36 transitions, 332 flow [2023-09-01 08:38:20,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.6) internal successors, (676), 10 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:38:20,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:20,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:38:20,425 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,SelfDestructingSolverStorable26 [2023-09-01 08:38:20,425 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 08:38:20,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:38:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -913936527, now seen corresponding path program 5 times [2023-09-01 08:38:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:38:20,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801631727] [2023-09-01 08:38:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:38:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:38:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:38:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:20,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:38:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801631727] [2023-09-01 08:38:20,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801631727] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:38:20,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457489147] [2023-09-01 08:38:20,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 08:38:20,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:20,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:38:20,501 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:38:20,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:38:20,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:38:20,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:38:20,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:38:20,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:38:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:38:20,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:38:20,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457489147] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:38:20,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:38:20,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-09-01 08:38:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361484035] [2023-09-01 08:38:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:38:20,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:38:20,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:38:20,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:38:20,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:38:20,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2023-09-01 08:38:20,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 36 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:38:20,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2023-09-01 08:38:20,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:38:20,680 INFO L130 PetriNetUnfolder]: 40/87 cut-off events. [2023-09-01 08:38:20,680 INFO L131 PetriNetUnfolder]: For 383/383 co-relation queries the response was YES. [2023-09-01 08:38:20,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 87 events. 40/87 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 3 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 481. Up to 31 conditions per place. [2023-09-01 08:38:20,681 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-09-01 08:38:20,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 38 transitions, 400 flow [2023-09-01 08:38:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:38:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:38:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2023-09-01 08:38:20,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45950864422202004 [2023-09-01 08:38:20,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 505 transitions. [2023-09-01 08:38:20,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 505 transitions. [2023-09-01 08:38:20,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:38:20,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 505 transitions. [2023-09-01 08:38:20,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,685 INFO L175 Difference]: Start difference. First operand has 72 places, 36 transitions, 332 flow. Second operand 7 states and 505 transitions. [2023-09-01 08:38:20,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 38 transitions, 400 flow [2023-09-01 08:38:20,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 38 transitions, 341 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-09-01 08:38:20,687 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-09-01 08:38:20,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-09-01 08:38:20,688 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 37 predicate places. [2023-09-01 08:38:20,688 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-09-01 08:38:20,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:38:20,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-09-01 08:38:20,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-09-01 08:38:20,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 08:38:20,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 08:38:20,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 08:38:20,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 08:38:20,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 08:38:20,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 08:38:20,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-09-01 08:38:20,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-09-01 08:38:20,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 08:38:20,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 08:38:20,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 08:38:20,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 08:38:20,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 08:38:20,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 08:38:20,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 08:38:20,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 08:38:20,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:38:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:38:20,903 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:38:20,907 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:38:20,907 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:38:20,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:38:20 BasicIcfg [2023-09-01 08:38:20,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:38:20,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:38:20,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:38:20,910 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:38:20,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:38:08" (3/4) ... [2023-09-01 08:38:20,919 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:38:20,923 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:38:20,924 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:38:20,927 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 08:38:20,927 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:38:20,927 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:38:20,927 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:38:20,958 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:38:20,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:38:20,959 INFO L158 Benchmark]: Toolchain (without parser) took 13284.96ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 43.7MB in the beginning and 56.8MB in the end (delta: -13.0MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2023-09-01 08:38:20,959 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 35.1MB in the end (delta: 48.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:38:20,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.91ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 50.8MB in the end (delta: -7.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2023-09-01 08:38:20,960 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.18ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 49.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:38:20,960 INFO L158 Benchmark]: Boogie Preprocessor took 46.02ms. Allocated memory is still 71.3MB. Free memory was 49.2MB in the beginning and 48.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:38:20,961 INFO L158 Benchmark]: RCFGBuilder took 430.19ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 34.3MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 08:38:20,962 INFO L158 Benchmark]: TraceAbstraction took 12531.91ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 33.6MB in the beginning and 58.9MB in the end (delta: -25.3MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2023-09-01 08:38:20,962 INFO L158 Benchmark]: Witness Printer took 49.25ms. Allocated memory is still 159.4MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:38:20,964 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 35.1MB in the end (delta: 48.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.91ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 50.8MB in the end (delta: -7.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.18ms. Allocated memory is still 71.3MB. Free memory was 50.8MB in the beginning and 49.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.02ms. Allocated memory is still 71.3MB. Free memory was 49.2MB in the beginning and 48.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.19ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 34.3MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12531.91ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 33.6MB in the beginning and 58.9MB in the end (delta: -25.3MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * Witness Printer took 49.25ms. Allocated memory is still 159.4MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 75 PlacesBefore, 26 PlacesAfterwards, 73 TransitionsBefore, 21 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 66 TotalNumberOfCompositions, 1018 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 973, independent: 966, independent conditional: 0, independent unconditional: 966, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 515, independent: 511, independent conditional: 0, independent unconditional: 511, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 973, independent: 455, independent conditional: 0, independent unconditional: 455, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 515, unknown conditional: 0, unknown unconditional: 515] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.4s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2296 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1832 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 847 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5385 IncrementalHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 163 mSDtfsCounter, 5385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=20, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 320 ConstructedInterpolants, 0 QuantifiedInterpolants, 1376 SizeOfPredicates, 15 NumberOfNonLiveVariables, 700 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 41 InterpolantComputations, 23 PerfectInterpolantSequences, 15/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:38:20,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE