./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.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 dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:13:40,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:13:40,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:13:40,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:13:40,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:13:40,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:13:40,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:13:40,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:13:40,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:13:40,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:13:40,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:13:40,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:13:40,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:13:40,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:13:40,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:13:40,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:13:40,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:13:40,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:13:40,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:13:40,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:13:40,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:13:40,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:13:40,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:13:40,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:13:40,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:13:40,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:13:40,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:13:40,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:13:40,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:13:40,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:13:40,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:13:40,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:13:40,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:13:40,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:13:40,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:13:40,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:13:40,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:13:40,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:13:40,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:13:40,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:13:40,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:13:40,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:13:40,898 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:13:40,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:13:40,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:13:40,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:13:40,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:13:40,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:13:40,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:13:40,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:13:40,901 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:13:40,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:13:40,902 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:13:40,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:13:40,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:13:40,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:13:40,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:13:40,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:13:40,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:13:40,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:13:40,903 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:13:40,903 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:13:40,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:13:40,904 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:13:40,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:13:40,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:13:40,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:13:40,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:13:40,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:13:40,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:13:40,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:13:40,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:13:40,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:13:40,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:13:40,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:13:40,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:13:40,906 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:13:40,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:13:40,907 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:13:40,907 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:13:41,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:13:41,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:13:41,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:13:41,249 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:13:41,250 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:13:41,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-08-30 11:13:42,484 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:13:42,681 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:13:42,682 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-08-30 11:13:42,690 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e488df2a/6dffaee0ebf346cb85978d439fb604c7/FLAG9aa19c27b [2023-08-30 11:13:42,726 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e488df2a/6dffaee0ebf346cb85978d439fb604c7 [2023-08-30 11:13:42,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:13:42,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:13:42,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:13:42,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:13:42,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:13:42,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:42,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4781c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42, skipping insertion in model container [2023-08-30 11:13:42,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:42,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:13:42,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:13:42,896 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/parallel-lamport.wvr.c[4210,4223] [2023-08-30 11:13:42,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:13:42,911 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:13:42,935 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/parallel-lamport.wvr.c[4210,4223] [2023-08-30 11:13:42,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:13:42,946 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:13:42,964 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:13:42,971 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:13:42,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42 WrapperNode [2023-08-30 11:13:42,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:13:42,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:13:42,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:13:42,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:13:42,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:42,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,037 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 249 [2023-08-30 11:13:43,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:13:43,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:13:43,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:13:43,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:13:43,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,096 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:13:43,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:13:43,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:13:43,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:13:43,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (1/1) ... [2023-08-30 11:13:43,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:13:43,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:43,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:13:43,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:13:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:13:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:13:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:13:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:13:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:13:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:13:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:13:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:13:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:13:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:13:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:13:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:13:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:13:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:13:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:13:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:13:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:13:43,192 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:13:43,345 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:13:43,347 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:13:43,636 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:13:43,740 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:13:43,740 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-30 11:13:43,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:13:43 BoogieIcfgContainer [2023-08-30 11:13:43,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:13:43,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:13:43,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:13:43,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:13:43,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:13:42" (1/3) ... [2023-08-30 11:13:43,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae1f770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:13:43, skipping insertion in model container [2023-08-30 11:13:43,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:13:42" (2/3) ... [2023-08-30 11:13:43,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae1f770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:13:43, skipping insertion in model container [2023-08-30 11:13:43,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:13:43" (3/3) ... [2023-08-30 11:13:43,750 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2023-08-30 11:13:43,758 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:13:43,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:13:43,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 11:13:43,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:13:43,829 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:13:43,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2023-08-30 11:13:43,947 INFO L130 PetriNetUnfolder]: 7/183 cut-off events. [2023-08-30 11:13:43,947 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:13:43,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2023-08-30 11:13:43,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2023-08-30 11:13:43,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 162 transitions, 336 flow [2023-08-30 11:13:43,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:13:43,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 162 transitions, 336 flow [2023-08-30 11:13:43,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 162 transitions, 336 flow [2023-08-30 11:13:43,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 162 transitions, 336 flow [2023-08-30 11:13:43,997 INFO L130 PetriNetUnfolder]: 6/162 cut-off events. [2023-08-30 11:13:43,998 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:13:43,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 162 events. 6/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2023-08-30 11:13:44,000 INFO L119 LiptonReduction]: Number of co-enabled transitions 1488 [2023-08-30 11:13:49,697 INFO L134 LiptonReduction]: Checked pairs total: 9757 [2023-08-30 11:13:49,697 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-30 11:13:49,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:13:49,714 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;@1730303a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:13:49,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 11:13:49,718 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:13:49,718 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:13:49,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:49,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:13:49,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:49,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 24101, now seen corresponding path program 1 times [2023-08-30 11:13:49,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769040208] [2023-08-30 11:13:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:50,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769040208] [2023-08-30 11:13:50,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769040208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:50,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:50,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:13:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136322786] [2023-08-30 11:13:50,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:50,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:50,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:50,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:13:50,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 333 [2023-08-30 11:13:50,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:50,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:50,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 333 [2023-08-30 11:13:50,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:50,494 INFO L130 PetriNetUnfolder]: 1863/3133 cut-off events. [2023-08-30 11:13:50,494 INFO L131 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2023-08-30 11:13:50,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6487 conditions, 3133 events. 1863/3133 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19725 event pairs, 1862 based on Foata normal form. 0/2868 useless extension candidates. Maximal degree in co-relation 3040. Up to 1477 conditions per place. [2023-08-30 11:13:50,521 INFO L137 encePairwiseOnDemand]: 329/333 looper letters, 55 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 11:13:50,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 268 flow [2023-08-30 11:13:50,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-30 11:13:50,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245245245245245 [2023-08-30 11:13:50,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-30 11:13:50,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-30 11:13:50,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:50,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-30 11:13:50,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:50,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:50,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:50,559 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 88 flow. Second operand 3 states and 524 transitions. [2023-08-30 11:13:50,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 268 flow [2023-08-30 11:13:50,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 256 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 11:13:50,574 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 96 flow [2023-08-30 11:13:50,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-30 11:13:50,580 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-08-30 11:13:50,583 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 96 flow [2023-08-30 11:13:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:50,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:50,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:13:50,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:13:50,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:50,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:50,586 INFO L85 PathProgramCache]: Analyzing trace with hash 748540, now seen corresponding path program 1 times [2023-08-30 11:13:50,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:50,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732559770] [2023-08-30 11:13:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:50,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:50,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732559770] [2023-08-30 11:13:50,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732559770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:50,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988408210] [2023-08-30 11:13:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:50,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:50,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:50,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:50,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:13:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:50,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:13:50,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:50,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988408210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:50,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:13:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126367507] [2023-08-30 11:13:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:50,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:13:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:13:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:50,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 333 [2023-08-30 11:13:50,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:50,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:50,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 333 [2023-08-30 11:13:50,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:51,262 INFO L130 PetriNetUnfolder]: 1863/3132 cut-off events. [2023-08-30 11:13:51,263 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 11:13:51,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6451 conditions, 3132 events. 1863/3132 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19758 event pairs, 1862 based on Foata normal form. 0/2870 useless extension candidates. Maximal degree in co-relation 3223. Up to 1475 conditions per place. [2023-08-30 11:13:51,274 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 54 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-30 11:13:51,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 262 flow [2023-08-30 11:13:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:13:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:13:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 677 transitions. [2023-08-30 11:13:51,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082582582582582 [2023-08-30 11:13:51,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 677 transitions. [2023-08-30 11:13:51,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 677 transitions. [2023-08-30 11:13:51,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:51,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 677 transitions. [2023-08-30 11:13:51,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,283 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 96 flow. Second operand 4 states and 677 transitions. [2023-08-30 11:13:51,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 262 flow [2023-08-30 11:13:51,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:51,284 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 94 flow [2023-08-30 11:13:51,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-30 11:13:51,285 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2023-08-30 11:13:51,285 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 94 flow [2023-08-30 11:13:51,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:51,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:13:51,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:13:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:51,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:51,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash 748548, now seen corresponding path program 1 times [2023-08-30 11:13:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:51,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796400677] [2023-08-30 11:13:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:51,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:51,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796400677] [2023-08-30 11:13:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796400677] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110029956] [2023-08-30 11:13:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:51,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:51,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:13:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:51,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:13:51,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:51,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:13:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110029956] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:13:51,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:13:51,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:13:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394578305] [2023-08-30 11:13:51,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:13:51,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:13:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:13:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:13:51,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 333 [2023-08-30 11:13:51,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 156.14285714285714) internal successors, (1093), 7 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:51,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:51,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 333 [2023-08-30 11:13:51,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:52,578 INFO L130 PetriNetUnfolder]: 4656/7827 cut-off events. [2023-08-30 11:13:52,578 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 11:13:52,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16112 conditions, 7827 events. 4656/7827 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 57589 event pairs, 4655 based on Foata normal form. 0/7196 useless extension candidates. Maximal degree in co-relation 12883. Up to 1476 conditions per place. [2023-08-30 11:13:52,615 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 132 selfloop transitions, 5 changer transitions 0/145 dead transitions. [2023-08-30 11:13:52,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 145 transitions, 612 flow [2023-08-30 11:13:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:13:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:13:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1070 transitions. [2023-08-30 11:13:52,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355355355355356 [2023-08-30 11:13:52,619 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1070 transitions. [2023-08-30 11:13:52,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1070 transitions. [2023-08-30 11:13:52,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:52,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1070 transitions. [2023-08-30 11:13:52,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,627 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,627 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 94 flow. Second operand 6 states and 1070 transitions. [2023-08-30 11:13:52,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 145 transitions, 612 flow [2023-08-30 11:13:52,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 145 transitions, 609 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:13:52,635 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 127 flow [2023-08-30 11:13:52,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-30 11:13:52,636 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-08-30 11:13:52,636 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 127 flow [2023-08-30 11:13:52,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.14285714285714) internal successors, (1093), 7 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:52,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:13:52,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:13:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 11:13:52,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:52,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash 719276741, now seen corresponding path program 1 times [2023-08-30 11:13:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:52,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568140895] [2023-08-30 11:13:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:52,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:52,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568140895] [2023-08-30 11:13:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568140895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:52,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:52,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:13:52,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402773817] [2023-08-30 11:13:52,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:52,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:52,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:13:52,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 333 [2023-08-30 11:13:52,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:52,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:52,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 333 [2023-08-30 11:13:52,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:53,516 INFO L130 PetriNetUnfolder]: 4216/7422 cut-off events. [2023-08-30 11:13:53,517 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-30 11:13:53,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15001 conditions, 7422 events. 4216/7422 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 55720 event pairs, 1815 based on Foata normal form. 130/7142 useless extension candidates. Maximal degree in co-relation 11993. Up to 4091 conditions per place. [2023-08-30 11:13:53,541 INFO L137 encePairwiseOnDemand]: 328/333 looper letters, 34 selfloop transitions, 3 changer transitions 8/53 dead transitions. [2023-08-30 11:13:53,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 244 flow [2023-08-30 11:13:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-30 11:13:53,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085085085085085 [2023-08-30 11:13:53,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-30 11:13:53,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-30 11:13:53,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:53,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-30 11:13:53,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,547 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 127 flow. Second operand 3 states and 508 transitions. [2023-08-30 11:13:53,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 244 flow [2023-08-30 11:13:53,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 236 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:53,549 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 132 flow [2023-08-30 11:13:53,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-08-30 11:13:53,550 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 8 predicate places. [2023-08-30 11:13:53,550 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 132 flow [2023-08-30 11:13:53,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:53,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:53,551 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:13:53,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:13:53,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:53,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:53,551 INFO L85 PathProgramCache]: Analyzing trace with hash 826317805, now seen corresponding path program 2 times [2023-08-30 11:13:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227957037] [2023-08-30 11:13:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:53,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227957037] [2023-08-30 11:13:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227957037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:13:53,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361050141] [2023-08-30 11:13:53,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:13:53,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:53,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:13:53,673 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:13:53,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:13:53,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:13:53,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:13:53,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:13:53,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:13:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:13:53,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:13:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361050141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:53,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:13:53,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:13:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956726951] [2023-08-30 11:13:53,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:53,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:53,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:13:53,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 333 [2023-08-30 11:13:53,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 132 flow. Second operand 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) [2023-08-30 11:13:53,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:53,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 333 [2023-08-30 11:13:53,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:54,395 INFO L130 PetriNetUnfolder]: 4216/7156 cut-off events. [2023-08-30 11:13:54,395 INFO L131 PetriNetUnfolder]: For 728/728 co-relation queries the response was YES. [2023-08-30 11:13:54,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15779 conditions, 7156 events. 4216/7156 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 52331 event pairs, 4215 based on Foata normal form. 1/6697 useless extension candidates. Maximal degree in co-relation 12612. Up to 6726 conditions per place. [2023-08-30 11:13:54,421 INFO L137 encePairwiseOnDemand]: 331/333 looper letters, 31 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 11:13:54,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 40 transitions, 186 flow [2023-08-30 11:13:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-30 11:13:54,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974974974974975 [2023-08-30 11:13:54,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-30 11:13:54,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-30 11:13:54,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:54,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-30 11:13:54,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:54,429 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 132 flow. Second operand 3 states and 497 transitions. [2023-08-30 11:13:54,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 40 transitions, 186 flow [2023-08-30 11:13:54,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 170 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 11:13:54,435 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 108 flow [2023-08-30 11:13:54,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-30 11:13:54,437 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-30 11:13:54,437 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 108 flow [2023-08-30 11:13:54,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-08-30 11:13:54,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:54,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:54,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:13:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:13:54,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:54,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash -260006166, now seen corresponding path program 1 times [2023-08-30 11:13:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:54,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818383727] [2023-08-30 11:13:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:54,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818383727] [2023-08-30 11:13:54,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818383727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:54,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:13:54,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195545958] [2023-08-30 11:13:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:54,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:13:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:13:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:13:54,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 333 [2023-08-30 11:13:54,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 108 flow. Second operand 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) [2023-08-30 11:13:54,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:54,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 333 [2023-08-30 11:13:54,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:55,246 INFO L130 PetriNetUnfolder]: 3996/7106 cut-off events. [2023-08-30 11:13:55,246 INFO L131 PetriNetUnfolder]: For 380/380 co-relation queries the response was YES. [2023-08-30 11:13:55,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14900 conditions, 7106 events. 3996/7106 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 53301 event pairs, 1695 based on Foata normal form. 80/6861 useless extension candidates. Maximal degree in co-relation 14891. Up to 3941 conditions per place. [2023-08-30 11:13:55,273 INFO L137 encePairwiseOnDemand]: 328/333 looper letters, 35 selfloop transitions, 3 changer transitions 6/52 dead transitions. [2023-08-30 11:13:55,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 52 transitions, 226 flow [2023-08-30 11:13:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:13:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:13:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-08-30 11:13:55,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2023-08-30 11:13:55,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-08-30 11:13:55,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-08-30 11:13:55,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:55,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-08-30 11:13:55,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,279 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 108 flow. Second operand 3 states and 507 transitions. [2023-08-30 11:13:55,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 52 transitions, 226 flow [2023-08-30 11:13:55,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:13:55,280 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 120 flow [2023-08-30 11:13:55,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-30 11:13:55,282 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-30 11:13:55,283 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 120 flow [2023-08-30 11:13:55,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-08-30 11:13:55,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:55,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:55,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:13:55,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:55,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:55,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2019715015, now seen corresponding path program 1 times [2023-08-30 11:13:55,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:55,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110485208] [2023-08-30 11:13:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:55,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110485208] [2023-08-30 11:13:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110485208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:55,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:55,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:13:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509089169] [2023-08-30 11:13:55,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:13:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:55,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:13:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:55,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 333 [2023-08-30 11:13:55,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:55,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:55,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 333 [2023-08-30 11:13:55,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:56,168 INFO L130 PetriNetUnfolder]: 6376/11326 cut-off events. [2023-08-30 11:13:56,169 INFO L131 PetriNetUnfolder]: For 1585/1585 co-relation queries the response was YES. [2023-08-30 11:13:56,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24752 conditions, 11326 events. 6376/11326 cut-off events. For 1585/1585 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 88452 event pairs, 1045 based on Foata normal form. 0/11171 useless extension candidates. Maximal degree in co-relation 24741. Up to 3250 conditions per place. [2023-08-30 11:13:56,217 INFO L137 encePairwiseOnDemand]: 326/333 looper letters, 38 selfloop transitions, 4 changer transitions 48/97 dead transitions. [2023-08-30 11:13:56,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 97 transitions, 448 flow [2023-08-30 11:13:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:13:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:13:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2023-08-30 11:13:56,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48176748176748174 [2023-08-30 11:13:56,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2023-08-30 11:13:56,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2023-08-30 11:13:56,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:56,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2023-08-30 11:13:56,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,229 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,229 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 120 flow. Second operand 7 states and 1123 transitions. [2023-08-30 11:13:56,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 97 transitions, 448 flow [2023-08-30 11:13:56,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 97 transitions, 430 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:13:56,242 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 133 flow [2023-08-30 11:13:56,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2023-08-30 11:13:56,242 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2023-08-30 11:13:56,243 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 133 flow [2023-08-30 11:13:56,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:56,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:13:56,244 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:56,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2019715014, now seen corresponding path program 1 times [2023-08-30 11:13:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70069767] [2023-08-30 11:13:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:56,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70069767] [2023-08-30 11:13:56,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70069767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:56,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:56,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:13:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484834398] [2023-08-30 11:13:56,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:56,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:13:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:56,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:13:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:56,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 333 [2023-08-30 11:13:56,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:56,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 333 [2023-08-30 11:13:56,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:56,625 INFO L130 PetriNetUnfolder]: 1296/2691 cut-off events. [2023-08-30 11:13:56,625 INFO L131 PetriNetUnfolder]: For 875/880 co-relation queries the response was YES. [2023-08-30 11:13:56,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6601 conditions, 2691 events. 1296/2691 cut-off events. For 875/880 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18294 event pairs, 335 based on Foata normal form. 155/2691 useless extension candidates. Maximal degree in co-relation 6586. Up to 1141 conditions per place. [2023-08-30 11:13:56,639 INFO L137 encePairwiseOnDemand]: 326/333 looper letters, 23 selfloop transitions, 3 changer transitions 23/54 dead transitions. [2023-08-30 11:13:56,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 265 flow [2023-08-30 11:13:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:13:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:13:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 784 transitions. [2023-08-30 11:13:56,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708708708708709 [2023-08-30 11:13:56,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 784 transitions. [2023-08-30 11:13:56,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 784 transitions. [2023-08-30 11:13:56,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:56,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 784 transitions. [2023-08-30 11:13:56,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,649 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 133 flow. Second operand 5 states and 784 transitions. [2023-08-30 11:13:56,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 265 flow [2023-08-30 11:13:56,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 244 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 11:13:56,657 INFO L231 Difference]: Finished difference. Result has 53 places, 27 transitions, 89 flow [2023-08-30 11:13:56,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=53, PETRI_TRANSITIONS=27} [2023-08-30 11:13:56,659 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-08-30 11:13:56,660 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 27 transitions, 89 flow [2023-08-30 11:13:56,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:56,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:56,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:13:56,661 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:56,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2019251924, now seen corresponding path program 1 times [2023-08-30 11:13:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:56,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697848803] [2023-08-30 11:13:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:56,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:56,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697848803] [2023-08-30 11:13:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697848803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:56,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:56,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:13:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875612357] [2023-08-30 11:13:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:56,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:13:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:13:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:56,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 333 [2023-08-30 11:13:56,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 27 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:56,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 333 [2023-08-30 11:13:56,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:56,868 INFO L130 PetriNetUnfolder]: 516/1056 cut-off events. [2023-08-30 11:13:56,868 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-30 11:13:56,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2512 conditions, 1056 events. 516/1056 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6108 event pairs, 125 based on Foata normal form. 0/1056 useless extension candidates. Maximal degree in co-relation 2501. Up to 900 conditions per place. [2023-08-30 11:13:56,874 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 24 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-30 11:13:56,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 147 flow [2023-08-30 11:13:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:13:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:13:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 615 transitions. [2023-08-30 11:13:56,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-08-30 11:13:56,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 615 transitions. [2023-08-30 11:13:56,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 615 transitions. [2023-08-30 11:13:56,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:56,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 615 transitions. [2023-08-30 11:13:56,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,881 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,881 INFO L175 Difference]: Start difference. First operand has 53 places, 27 transitions, 89 flow. Second operand 4 states and 615 transitions. [2023-08-30 11:13:56,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 147 flow [2023-08-30 11:13:56,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:13:56,883 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 80 flow [2023-08-30 11:13:56,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-30 11:13:56,884 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2023-08-30 11:13:56,884 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 80 flow [2023-08-30 11:13:56,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:13:56,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:56,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:13:56,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 11:13:56,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:13:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2019251925, now seen corresponding path program 1 times [2023-08-30 11:13:56,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:13:56,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739422737] [2023-08-30 11:13:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:13:56,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:13:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:13:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:13:56,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:13:56,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739422737] [2023-08-30 11:13:56,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739422737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:13:56,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:13:56,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:13:56,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163023252] [2023-08-30 11:13:56,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:13:56,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:13:56,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:13:56,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:13:56,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:13:56,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 333 [2023-08-30 11:13:56,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:56,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:13:56,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 333 [2023-08-30 11:13:56,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:13:57,050 INFO L130 PetriNetUnfolder]: 216/546 cut-off events. [2023-08-30 11:13:57,050 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-08-30 11:13:57,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 546 events. 216/546 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2821 event pairs, 5 based on Foata normal form. 150/696 useless extension candidates. Maximal degree in co-relation 1181. Up to 300 conditions per place. [2023-08-30 11:13:57,052 INFO L137 encePairwiseOnDemand]: 328/333 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-30 11:13:57,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 154 flow [2023-08-30 11:13:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:13:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:13:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-08-30 11:13:57,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46006006006006006 [2023-08-30 11:13:57,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-08-30 11:13:57,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-08-30 11:13:57,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:13:57,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-08-30 11:13:57,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,060 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 80 flow. Second operand 5 states and 766 transitions. [2023-08-30 11:13:57,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 154 flow [2023-08-30 11:13:57,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:13:57,061 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-30 11:13:57,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-30 11:13:57,062 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -9 predicate places. [2023-08-30 11:13:57,062 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-30 11:13:57,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:13:57,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-30 11:13:57,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 11:13:57,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 11:13:57,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 11:13:57,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 11:13:57,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 11:13:57,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-08-30 11:13:57,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-08-30 11:13:57,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-08-30 11:13:57,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 11:13:57,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 11:13:57,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 11:13:57,066 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 11:13:57,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:13:57,067 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:13:57,071 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:13:57,071 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:13:57,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:13:57 BasicIcfg [2023-08-30 11:13:57,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:13:57,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:13:57,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:13:57,074 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:13:57,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:13:43" (3/4) ... [2023-08-30 11:13:57,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:13:57,081 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:13:57,081 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:13:57,081 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:13:57,086 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 11:13:57,086 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:13:57,086 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:13:57,087 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:13:57,118 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:13:57,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:13:57,119 INFO L158 Benchmark]: Toolchain (without parser) took 14389.98ms. Allocated memory was 92.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 72.9MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 393.4MB. Max. memory is 16.1GB. [2023-08-30 11:13:57,119 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:13:57,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.55ms. Allocated memory is still 92.3MB. Free memory was 72.9MB in the beginning and 60.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 11:13:57,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.41ms. Allocated memory is still 92.3MB. Free memory was 60.8MB in the beginning and 58.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:13:57,120 INFO L158 Benchmark]: Boogie Preprocessor took 61.47ms. Allocated memory is still 92.3MB. Free memory was 58.4MB in the beginning and 56.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:13:57,120 INFO L158 Benchmark]: RCFGBuilder took 641.76ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 51.8MB in the end (delta: 4.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2023-08-30 11:13:57,121 INFO L158 Benchmark]: TraceAbstraction took 13329.80ms. Allocated memory was 92.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 51.4MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 368.1MB. Max. memory is 16.1GB. [2023-08-30 11:13:57,121 INFO L158 Benchmark]: Witness Printer took 44.66ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:13:57,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.55ms. Allocated memory is still 92.3MB. Free memory was 72.9MB in the beginning and 60.8MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.41ms. Allocated memory is still 92.3MB. Free memory was 60.8MB in the beginning and 58.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.47ms. Allocated memory is still 92.3MB. Free memory was 58.4MB in the beginning and 56.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 641.76ms. Allocated memory is still 92.3MB. Free memory was 56.6MB in the beginning and 51.8MB in the end (delta: 4.7MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13329.80ms. Allocated memory was 92.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 51.4MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 368.1MB. Max. memory is 16.1GB. * Witness Printer took 44.66ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). 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: 5.7s, 166 PlacesBefore, 47 PlacesAfterwards, 162 TransitionsBefore, 38 TransitionsAfterwards, 1488 CoEnabledTransitionPairs, 8 FixpointIterations, 104 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 0 ConcurrentYvCompositions, 5 ChoiceCompositions, 147 TotalNumberOfCompositions, 9757 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4040, independent: 3624, independent conditional: 0, independent unconditional: 3624, dependent: 416, dependent conditional: 0, dependent unconditional: 416, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 791, independent: 760, independent conditional: 0, independent unconditional: 760, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4040, independent: 2864, independent conditional: 0, independent unconditional: 2864, dependent: 385, dependent conditional: 0, dependent unconditional: 385, unknown: 791, unknown conditional: 0, unknown unconditional: 791] , Statistics on independence cache: Total cache size (in pairs): 236, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: 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 7 procedures, 219 locations, 13 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: 13.2s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 642 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 560 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 870 IncrementalHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 22 mSDtfsCounter, 870 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=7, InterpolantAutomatonStates: 43, 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, 0.9s InterpolantComputationTime, 78 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 SizeOfPredicates, 2 NumberOfNonLiveVariables, 379 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 11/25 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:13:57,143 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