./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 03:54:54,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 03:54:54,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 03:54:54,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 03:54:54,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 03:54:54,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 03:54:54,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 03:54:54,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 03:54:54,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 03:54:54,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 03:54:54,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 03:54:54,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 03:54:54,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 03:54:54,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 03:54:54,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 03:54:54,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 03:54:54,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 03:54:54,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 03:54:54,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 03:54:54,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 03:54:54,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 03:54:54,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 03:54:54,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 03:54:54,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 03:54:54,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 03:54:54,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 03:54:54,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 03:54:54,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 03:54:54,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 03:54:54,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 03:54:54,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 03:54:54,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 03:54:54,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 03:54:54,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 03:54:54,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 03:54:54,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 03:54:54,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 03:54:54,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 03:54:54,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 03:54:54,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 03:54:54,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 03:54:54,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 03:54:55,029 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 03:54:55,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 03:54:55,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 03:54:55,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 03:54:55,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 03:54:55,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 03:54:55,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 03:54:55,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 03:54:55,033 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 03:54:55,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 03:54:55,034 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 03:54:55,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 03:54:55,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 03:54:55,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 03:54:55,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 03:54:55,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 03:54:55,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 03:54:55,035 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 03:54:55,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 03:54:55,036 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 03:54:55,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 03:54:55,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 03:54:55,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 03:54:55,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 03:54:55,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:54:55,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 03:54:55,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 03:54:55,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 03:54:55,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 03:54:55,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 03:54:55,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 03:54:55,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 03:54:55,038 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 03:54:55,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 03:54:55,039 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 03:54:55,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 03:54:55,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 03:54:55,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 03:54:55,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 03:54:55,363 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 03:54:55,363 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 03:54:55,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-08-31 03:54:56,311 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 03:54:56,439 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 03:54:56,440 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-08-31 03:54:56,445 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28ca28e00/a34e4c2355fb4d1792596d6548f09ef1/FLAG95c667290 [2023-08-31 03:54:56,474 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28ca28e00/a34e4c2355fb4d1792596d6548f09ef1 [2023-08-31 03:54:56,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 03:54:56,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 03:54:56,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 03:54:56,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 03:54:56,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 03:54:56,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9faa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56, skipping insertion in model container [2023-08-31 03:54:56,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 03:54:56,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 03:54:56,660 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2023-08-31 03:54:56,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:54:56,681 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 03:54:56,713 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c[2691,2704] [2023-08-31 03:54:56,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 03:54:56,726 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:54:56,727 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 03:54:56,732 INFO L208 MainTranslator]: Completed translation [2023-08-31 03:54:56,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56 WrapperNode [2023-08-31 03:54:56,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 03:54:56,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 03:54:56,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 03:54:56,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 03:54:56,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,777 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 154 [2023-08-31 03:54:56,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 03:54:56,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 03:54:56,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 03:54:56,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 03:54:56,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 03:54:56,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 03:54:56,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 03:54:56,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 03:54:56,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (1/1) ... [2023-08-31 03:54:56,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 03:54:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:54:56,878 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) [2023-08-31 03:54:56,894 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 [2023-08-31 03:54:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 03:54:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 03:54:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 03:54:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 03:54:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 03:54:56,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 03:54:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 03:54:56,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 03:54:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 03:54:56,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 03:54:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 03:54:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 03:54:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 03:54:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 03:54:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 03:54:56,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 03:54:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 03:54:56,909 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 03:54:56,988 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 03:54:56,989 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 03:54:57,362 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 03:54:57,391 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 03:54:57,392 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 03:54:57,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:54:57 BoogieIcfgContainer [2023-08-31 03:54:57,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 03:54:57,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 03:54:57,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 03:54:57,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 03:54:57,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 03:54:56" (1/3) ... [2023-08-31 03:54:57,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49deeb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:54:57, skipping insertion in model container [2023-08-31 03:54:57,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 03:54:56" (2/3) ... [2023-08-31 03:54:57,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49deeb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 03:54:57, skipping insertion in model container [2023-08-31 03:54:57,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 03:54:57" (3/3) ... [2023-08-31 03:54:57,405 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-08-31 03:54:57,411 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 03:54:57,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 03:54:57,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 03:54:57,418 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 03:54:57,495 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 03:54:57,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 212 transitions, 448 flow [2023-08-31 03:54:57,613 INFO L130 PetriNetUnfolder]: 20/209 cut-off events. [2023-08-31 03:54:57,613 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:54:57,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 20/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 152 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-08-31 03:54:57,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 212 transitions, 448 flow [2023-08-31 03:54:57,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 199 transitions, 416 flow [2023-08-31 03:54:57,625 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 03:54:57,630 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 199 transitions, 416 flow [2023-08-31 03:54:57,632 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 199 transitions, 416 flow [2023-08-31 03:54:57,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 199 transitions, 416 flow [2023-08-31 03:54:57,664 INFO L130 PetriNetUnfolder]: 20/199 cut-off events. [2023-08-31 03:54:57,664 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:54:57,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 20/199 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 156 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 170. Up to 3 conditions per place. [2023-08-31 03:54:57,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 1874 [2023-08-31 03:55:02,620 INFO L134 LiptonReduction]: Checked pairs total: 2518 [2023-08-31 03:55:02,620 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-08-31 03:55:02,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 03:55:02,644 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;@77614fc0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 03:55:02,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 03:55:02,649 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-08-31 03:55:02,649 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 03:55:02,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:55:02,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:55:02,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:55:02,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:55:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1140031693, now seen corresponding path program 1 times [2023-08-31 03:55:02,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:55:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242500107] [2023-08-31 03:55:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:55:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:55:03,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:55:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242500107] [2023-08-31 03:55:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242500107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:55:03,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:55:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 03:55:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160038069] [2023-08-31 03:55:03,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:55:03,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 03:55:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:55:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 03:55:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 03:55:03,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 416 [2023-08-31 03:55:03,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:03,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:55:03,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 416 [2023-08-31 03:55:03,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:55:03,551 INFO L130 PetriNetUnfolder]: 727/977 cut-off events. [2023-08-31 03:55:03,552 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-31 03:55:03,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 977 events. 727/977 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3462 event pairs, 114 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 1483. Up to 666 conditions per place. [2023-08-31 03:55:03,559 INFO L137 encePairwiseOnDemand]: 412/416 looper letters, 42 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2023-08-31 03:55:03,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 223 flow [2023-08-31 03:55:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 03:55:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 03:55:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-08-31 03:55:03,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484775641025641 [2023-08-31 03:55:03,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-08-31 03:55:03,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-08-31 03:55:03,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:55:03,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-08-31 03:55:03,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:03,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:03,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 416.0) internal successors, (1664), 4 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:03,592 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 605 transitions. [2023-08-31 03:55:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 223 flow [2023-08-31 03:55:03,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 03:55:03,597 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 87 flow [2023-08-31 03:55:03,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-08-31 03:55:03,600 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-31 03:55:03,601 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 87 flow [2023-08-31 03:55:03,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:03,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:55:03,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:55:03,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 03:55:03,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:55:03,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:55:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash -422331535, now seen corresponding path program 1 times [2023-08-31 03:55:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:55:03,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49148304] [2023-08-31 03:55:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:03,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:55:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:55:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:55:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49148304] [2023-08-31 03:55:03,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49148304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:55:03,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:55:03,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 03:55:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064382283] [2023-08-31 03:55:03,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:55:03,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:55:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:55:03,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:55:03,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 03:55:03,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 416 [2023-08-31 03:55:03,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:03,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:55:03,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 416 [2023-08-31 03:55:03,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:55:04,039 INFO L130 PetriNetUnfolder]: 1303/1799 cut-off events. [2023-08-31 03:55:04,039 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2023-08-31 03:55:04,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 1799 events. 1303/1799 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7215 event pairs, 578 based on Foata normal form. 50/1233 useless extension candidates. Maximal degree in co-relation 1767. Up to 1008 conditions per place. [2023-08-31 03:55:04,045 INFO L137 encePairwiseOnDemand]: 407/416 looper letters, 64 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2023-08-31 03:55:04,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 76 transitions, 341 flow [2023-08-31 03:55:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:55:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:55:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 906 transitions. [2023-08-31 03:55:04,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355769230769231 [2023-08-31 03:55:04,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 906 transitions. [2023-08-31 03:55:04,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 906 transitions. [2023-08-31 03:55:04,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:55:04,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 906 transitions. [2023-08-31 03:55:04,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,053 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 87 flow. Second operand 5 states and 906 transitions. [2023-08-31 03:55:04,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 76 transitions, 341 flow [2023-08-31 03:55:04,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 76 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 03:55:04,055 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 150 flow [2023-08-31 03:55:04,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-08-31 03:55:04,055 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-31 03:55:04,055 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 150 flow [2023-08-31 03:55:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:55:04,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:55:04,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 03:55:04,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:55:04,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:55:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1087856233, now seen corresponding path program 1 times [2023-08-31 03:55:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:55:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750002576] [2023-08-31 03:55:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:55:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 03:55:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:55:04,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750002576] [2023-08-31 03:55:04,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750002576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:55:04,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:55:04,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 03:55:04,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824101945] [2023-08-31 03:55:04,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:55:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:55:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:55:04,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:55:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 03:55:04,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 416 [2023-08-31 03:55:04,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:55:04,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 416 [2023-08-31 03:55:04,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:55:04,369 INFO L130 PetriNetUnfolder]: 800/1134 cut-off events. [2023-08-31 03:55:04,369 INFO L131 PetriNetUnfolder]: For 285/308 co-relation queries the response was YES. [2023-08-31 03:55:04,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2540 conditions, 1134 events. 800/1134 cut-off events. For 285/308 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4438 event pairs, 380 based on Foata normal form. 23/865 useless extension candidates. Maximal degree in co-relation 2053. Up to 911 conditions per place. [2023-08-31 03:55:04,373 INFO L137 encePairwiseOnDemand]: 406/416 looper letters, 28 selfloop transitions, 6 changer transitions 32/68 dead transitions. [2023-08-31 03:55:04,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 68 transitions, 348 flow [2023-08-31 03:55:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:55:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:55:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 900 transitions. [2023-08-31 03:55:04,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2023-08-31 03:55:04,375 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 900 transitions. [2023-08-31 03:55:04,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 900 transitions. [2023-08-31 03:55:04,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:55:04,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 900 transitions. [2023-08-31 03:55:04,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,380 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 150 flow. Second operand 5 states and 900 transitions. [2023-08-31 03:55:04,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 68 transitions, 348 flow [2023-08-31 03:55:04,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 346 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-31 03:55:04,382 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 138 flow [2023-08-31 03:55:04,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-31 03:55:04,383 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-31 03:55:04,383 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 138 flow [2023-08-31 03:55:04,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:55:04,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:55:04,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 03:55:04,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:55:04,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:55:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1040220969, now seen corresponding path program 1 times [2023-08-31 03:55:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:55:04,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516654552] [2023-08-31 03:55:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:55:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:55:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:55:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516654552] [2023-08-31 03:55:04,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516654552] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:55:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988252526] [2023-08-31 03:55:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:04,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:55:04,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:55:04,463 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) [2023-08-31 03:55:04,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 03:55:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:04,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:55:04,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:55:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:55:04,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:55:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 03:55:04,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988252526] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:55:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:55:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-31 03:55:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344550168] [2023-08-31 03:55:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:55:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:55:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:55:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:55:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 03:55:04,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 416 [2023-08-31 03:55:04,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:04,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:55:04,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 416 [2023-08-31 03:55:04,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:55:04,985 INFO L130 PetriNetUnfolder]: 855/1180 cut-off events. [2023-08-31 03:55:04,985 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2023-08-31 03:55:04,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 1180 events. 855/1180 cut-off events. For 325/325 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4450 event pairs, 332 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2821. Up to 884 conditions per place. [2023-08-31 03:55:04,992 INFO L137 encePairwiseOnDemand]: 411/416 looper letters, 45 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-31 03:55:04,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 282 flow [2023-08-31 03:55:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:55:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:55:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 874 transitions. [2023-08-31 03:55:04,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201923076923077 [2023-08-31 03:55:04,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 874 transitions. [2023-08-31 03:55:04,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 874 transitions. [2023-08-31 03:55:04,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:55:04,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 874 transitions. [2023-08-31 03:55:04,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.8) internal successors, (874), 5 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,003 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 138 flow. Second operand 5 states and 874 transitions. [2023-08-31 03:55:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 282 flow [2023-08-31 03:55:05,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 248 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-31 03:55:05,006 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 126 flow [2023-08-31 03:55:05,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-31 03:55:05,007 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-31 03:55:05,008 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 126 flow [2023-08-31 03:55:05,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:55:05,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:55:05,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 03:55:05,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:55:05,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:55:05,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:55:05,217 INFO L85 PathProgramCache]: Analyzing trace with hash -340615580, now seen corresponding path program 1 times [2023-08-31 03:55:05,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:55:05,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377022967] [2023-08-31 03:55:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:05,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:55:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:55:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:55:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377022967] [2023-08-31 03:55:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377022967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:55:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599573989] [2023-08-31 03:55:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:05,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:55:05,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:55:05,361 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) [2023-08-31 03:55:05,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 03:55:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:05,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:55:05,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:55:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:55:05,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:55:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:55:05,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599573989] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:55:05,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:55:05,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-31 03:55:05,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177391841] [2023-08-31 03:55:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:55:05,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:55:05,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:55:05,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:55:05,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 03:55:05,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 416 [2023-08-31 03:55:05,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:55:05,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 416 [2023-08-31 03:55:05,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:55:05,766 INFO L130 PetriNetUnfolder]: 669/936 cut-off events. [2023-08-31 03:55:05,766 INFO L131 PetriNetUnfolder]: For 241/314 co-relation queries the response was YES. [2023-08-31 03:55:05,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 936 events. 669/936 cut-off events. For 241/314 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3248 event pairs, 194 based on Foata normal form. 73/812 useless extension candidates. Maximal degree in co-relation 2317. Up to 469 conditions per place. [2023-08-31 03:55:05,771 INFO L137 encePairwiseOnDemand]: 409/416 looper letters, 42 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-31 03:55:05,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 265 flow [2023-08-31 03:55:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:55:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:55:05,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2023-08-31 03:55:05,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41971153846153847 [2023-08-31 03:55:05,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2023-08-31 03:55:05,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2023-08-31 03:55:05,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:55:05,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2023-08-31 03:55:05,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,803 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 126 flow. Second operand 5 states and 873 transitions. [2023-08-31 03:55:05,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 265 flow [2023-08-31 03:55:05,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 252 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 03:55:05,805 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 151 flow [2023-08-31 03:55:05,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-31 03:55:05,806 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-31 03:55:05,806 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 151 flow [2023-08-31 03:55:05,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:05,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:55:05,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:55:05,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 03:55:06,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:55:06,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:55:06,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:55:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash -155772382, now seen corresponding path program 1 times [2023-08-31 03:55:06,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:55:06,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705953124] [2023-08-31 03:55:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:55:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:55:06,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:55:06,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705953124] [2023-08-31 03:55:06,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705953124] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:55:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996285434] [2023-08-31 03:55:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:06,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:55:06,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:55:06,177 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) [2023-08-31 03:55:06,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 03:55:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:06,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 03:55:06,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:55:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:55:06,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:55:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 03:55:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996285434] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-31 03:55:06,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-31 03:55:06,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-31 03:55:06,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620874695] [2023-08-31 03:55:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:55:06,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:55:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:55:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:55:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-31 03:55:06,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 416 [2023-08-31 03:55:06,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:06,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:55:06,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 416 [2023-08-31 03:55:06,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:55:06,487 INFO L130 PetriNetUnfolder]: 685/950 cut-off events. [2023-08-31 03:55:06,488 INFO L131 PetriNetUnfolder]: For 498/627 co-relation queries the response was YES. [2023-08-31 03:55:06,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 950 events. 685/950 cut-off events. For 498/627 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3302 event pairs, 206 based on Foata normal form. 179/924 useless extension candidates. Maximal degree in co-relation 2651. Up to 559 conditions per place. [2023-08-31 03:55:06,492 INFO L137 encePairwiseOnDemand]: 410/416 looper letters, 48 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-31 03:55:06,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 323 flow [2023-08-31 03:55:06,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 03:55:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 03:55:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2023-08-31 03:55:06,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41971153846153847 [2023-08-31 03:55:06,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2023-08-31 03:55:06,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2023-08-31 03:55:06,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:55:06,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2023-08-31 03:55:06,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:06,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:06,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 416.0) internal successors, (2496), 6 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:06,499 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 151 flow. Second operand 5 states and 873 transitions. [2023-08-31 03:55:06,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 323 flow [2023-08-31 03:55:06,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 311 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 03:55:06,500 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 168 flow [2023-08-31 03:55:06,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-31 03:55:06,501 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-31 03:55:06,501 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 168 flow [2023-08-31 03:55:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:55:06,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:55:06,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:55:06,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 03:55:06,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:55:06,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:55:06,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:55:06,707 INFO L85 PathProgramCache]: Analyzing trace with hash -166136936, now seen corresponding path program 1 times [2023-08-31 03:55:06,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:55:06,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549449350] [2023-08-31 03:55:06,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:06,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:55:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:55:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:55:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549449350] [2023-08-31 03:55:08,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549449350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:55:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190602302] [2023-08-31 03:55:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:55:08,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:55:08,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:55:08,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:55:08,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 03:55:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:55:08,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-31 03:55:08,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:55:08,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:55:08,210 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-31 03:55:08,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2023-08-31 03:55:08,287 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-31 03:55:08,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-31 03:55:08,394 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-31 03:55:08,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-31 03:55:08,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-08-31 03:55:08,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:55:08,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:55:08,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:55:08,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-08-31 03:55:09,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2023-08-31 03:55:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:55:09,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:55:09,367 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_332 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_332))) (= (mod (+ (select (select .cse0 c_~C~0.base) c_~C~0.offset) c_~csum~0) 4294967296) (mod (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) (select (select .cse0 c_~B~0.base) c_~B~0.offset) c_~asum~0 c_~bsum~0) 4294967296)))) is different from false [2023-08-31 03:55:09,422 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-08-31 03:55:09,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 104 [2023-08-31 03:55:09,643 INFO L321 Elim1Store]: treesize reduction 11, result has 93.9 percent of original size [2023-08-31 03:55:09,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 321 treesize of output 410 [2023-08-31 03:55:09,677 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:55:09,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 198 [2023-08-31 03:58:22,185 WARN L222 SmtUtils]: Spent 40.79s on a formula simplification. DAG size of input: 151 DAG size of output: 31 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 03:58:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:58:22,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190602302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 03:58:22,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 03:58:22,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-08-31 03:58:22,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811580569] [2023-08-31 03:58:22,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 03:58:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-31 03:58:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:58:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-31 03:58:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1112, Unknown=2, NotChecked=68, Total=1332 [2023-08-31 03:58:22,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 416 [2023-08-31 03:58:22,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 168 flow. Second operand has 37 states, 37 states have (on average 127.16216216216216) internal successors, (4705), 37 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:22,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:58:22,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 416 [2023-08-31 03:58:22,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:58:24,599 INFO L130 PetriNetUnfolder]: 1172/1618 cut-off events. [2023-08-31 03:58:24,599 INFO L131 PetriNetUnfolder]: For 1467/1467 co-relation queries the response was YES. [2023-08-31 03:58:24,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 1618 events. 1172/1618 cut-off events. For 1467/1467 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5221 event pairs, 179 based on Foata normal form. 1/1322 useless extension candidates. Maximal degree in co-relation 5000. Up to 1095 conditions per place. [2023-08-31 03:58:24,607 INFO L137 encePairwiseOnDemand]: 404/416 looper letters, 92 selfloop transitions, 26 changer transitions 1/119 dead transitions. [2023-08-31 03:58:24,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 119 transitions, 729 flow [2023-08-31 03:58:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 03:58:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 03:58:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1734 transitions. [2023-08-31 03:58:24,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3206360946745562 [2023-08-31 03:58:24,617 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1734 transitions. [2023-08-31 03:58:24,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1734 transitions. [2023-08-31 03:58:24,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:58:24,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1734 transitions. [2023-08-31 03:58:24,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 133.3846153846154) internal successors, (1734), 13 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:24,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 416.0) internal successors, (5824), 14 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:24,626 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 416.0) internal successors, (5824), 14 states have internal predecessors, (5824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:24,626 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 168 flow. Second operand 13 states and 1734 transitions. [2023-08-31 03:58:24,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 119 transitions, 729 flow [2023-08-31 03:58:24,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 716 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 03:58:24,630 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 367 flow [2023-08-31 03:58:24,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=367, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2023-08-31 03:58:24,631 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 26 predicate places. [2023-08-31 03:58:24,631 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 367 flow [2023-08-31 03:58:24,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 127.16216216216216) internal successors, (4705), 37 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:24,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:58:24,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:58:24,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 03:58:24,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:58:24,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:58:24,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:58:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 2070806332, now seen corresponding path program 2 times [2023-08-31 03:58:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:58:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971729876] [2023-08-31 03:58:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:58:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:58:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:58:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 03:58:25,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:58:25,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971729876] [2023-08-31 03:58:25,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971729876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 03:58:25,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 03:58:25,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 03:58:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987865610] [2023-08-31 03:58:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 03:58:25,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 03:58:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 03:58:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 03:58:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 03:58:25,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 416 [2023-08-31 03:58:25,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 367 flow. Second operand has 5 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:25,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 03:58:25,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 416 [2023-08-31 03:58:25,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 03:58:25,222 INFO L130 PetriNetUnfolder]: 1002/1400 cut-off events. [2023-08-31 03:58:25,223 INFO L131 PetriNetUnfolder]: For 2756/2928 co-relation queries the response was YES. [2023-08-31 03:58:25,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5027 conditions, 1400 events. 1002/1400 cut-off events. For 2756/2928 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4806 event pairs, 131 based on Foata normal form. 202/1426 useless extension candidates. Maximal degree in co-relation 4973. Up to 795 conditions per place. [2023-08-31 03:58:25,230 INFO L137 encePairwiseOnDemand]: 410/416 looper letters, 94 selfloop transitions, 12 changer transitions 2/112 dead transitions. [2023-08-31 03:58:25,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 112 transitions, 840 flow [2023-08-31 03:58:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 03:58:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 03:58:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1181 transitions. [2023-08-31 03:58:25,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47315705128205127 [2023-08-31 03:58:25,233 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1181 transitions. [2023-08-31 03:58:25,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1181 transitions. [2023-08-31 03:58:25,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 03:58:25,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1181 transitions. [2023-08-31 03:58:25,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.83333333333334) internal successors, (1181), 6 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:25,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 416.0) internal successors, (2912), 7 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:25,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 416.0) internal successors, (2912), 7 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:25,239 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 367 flow. Second operand 6 states and 1181 transitions. [2023-08-31 03:58:25,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 112 transitions, 840 flow [2023-08-31 03:58:25,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 112 transitions, 808 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-31 03:58:25,245 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 427 flow [2023-08-31 03:58:25,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-31 03:58:25,248 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-08-31 03:58:25,248 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 427 flow [2023-08-31 03:58:25,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 03:58:25,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 03:58:25,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 03:58:25,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 03:58:25,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 03:58:25,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 03:58:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1174297838, now seen corresponding path program 3 times [2023-08-31 03:58:25,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 03:58:25,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522476969] [2023-08-31 03:58:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 03:58:25,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 03:58:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 03:58:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:58:26,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 03:58:26,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522476969] [2023-08-31 03:58:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522476969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 03:58:26,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582450235] [2023-08-31 03:58:26,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 03:58:26,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 03:58:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 03:58:26,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 03:58:26,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 03:58:26,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 03:58:26,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 03:58:26,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-31 03:58:26,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 03:58:26,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:58:26,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-31 03:58:26,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:58:26,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 03:58:26,824 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 03:58:26,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2023-08-31 03:58:26,981 INFO L321 Elim1Store]: treesize reduction 36, result has 52.0 percent of original size [2023-08-31 03:58:26,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 54 [2023-08-31 03:58:27,367 INFO L321 Elim1Store]: treesize reduction 60, result has 68.3 percent of original size [2023-08-31 03:58:27,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 113 treesize of output 193 [2023-08-31 03:58:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 03:58:27,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 03:59:34,287 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_430))) (let ((.cse0 (select (select |c_#memory_int| c_~B~0.base) (+ (* c_thread1Thread1of1ForFork1_~i~0 4) c_~B~0.offset))) (.cse1 (select (select .cse3 c_~B~0.base) c_~B~0.offset)) (.cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset))) (= (+ .cse0 c_~asum~0 c_~bsum~0 (* (div (+ .cse1 .cse2 c_~csum~0) 4294967296) 4294967296)) (+ (* (div (+ .cse0 c_~asum~0 c_~bsum~0) 4294967296) 4294967296) .cse1 .cse2 c_~csum~0))))) is different from false [2023-08-31 03:59:34,298 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_429))) (let ((.cse4 (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_430))) (let ((.cse1 (select (select .cse4 c_~B~0.base) c_~B~0.offset)) (.cse2 (select (select .cse4 c_~A~0.base) c_~A~0.offset)) (.cse0 (select (select .cse3 c_~B~0.base) (+ (* c_thread1Thread1of1ForFork1_~i~0 4) c_~B~0.offset)))) (= (+ c_~asum~0 c_~bsum~0 .cse0 (* (div (+ .cse1 c_~csum~0 .cse2) 4294967296) 4294967296)) (+ .cse1 c_~csum~0 .cse2 (* (div (+ c_~asum~0 c_~bsum~0 .cse0) 4294967296) 4294967296))))))) is different from false [2023-08-31 03:59:34,360 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:59:34,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4918 treesize of output 3194 [2023-08-31 03:59:34,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:59:34,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 774 treesize of output 718 [2023-08-31 03:59:34,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 03:59:34,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 710 treesize of output 610 [2023-08-31 04:01:53,843 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 04:04:42,644 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 04:04:42,689 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 04:06:27,985 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 04:09:00,555 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 04:09:00,606 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Killed by 15