./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:21:06,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:21:06,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:21:06,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:21:06,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:21:06,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:21:07,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:21:07,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:21:07,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:21:07,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:21:07,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:21:07,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:21:07,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:21:07,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:21:07,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:21:07,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:21:07,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:21:07,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:21:07,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:21:07,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:21:07,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:21:07,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:21:07,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:21:07,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:21:07,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:21:07,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:21:07,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:21:07,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:21:07,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:21:07,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:21:07,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:21:07,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:21:07,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:21:07,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:21:07,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:21:07,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:21:07,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:21:07,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:21:07,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:21:07,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:21:07,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:21:07,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:21:07,098 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:21:07,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:21:07,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:21:07,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:21:07,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:21:07,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:21:07,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:21:07,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:21:07,101 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:21:07,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:21:07,102 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:21:07,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:21:07,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:21:07,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:21:07,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:21:07,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:21:07,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:21:07,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:21:07,104 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:21:07,104 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:21:07,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:21:07,104 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:21:07,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:21:07,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:21:07,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:21:07,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:21:07,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:21:07,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:21:07,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:21:07,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:21:07,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:21:07,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:21:07,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:21:07,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:21:07,106 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:21:07,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:21:07,107 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:21:07,107 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:21:07,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:21:07,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:21:07,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:21:07,422 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:21:07,422 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:21:07,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-30 11:21:08,527 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:21:08,718 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:21:08,718 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-30 11:21:08,725 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f724ad53d/e5c7a034ac4245ebbcf3f3302800d798/FLAG87a09a9bd [2023-08-30 11:21:08,737 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f724ad53d/e5c7a034ac4245ebbcf3f3302800d798 [2023-08-30 11:21:08,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:21:08,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:21:08,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:21:08,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:21:08,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:21:08,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:08,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162e6a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08, skipping insertion in model container [2023-08-30 11:21:08,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:08,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:21:08,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:21:08,899 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-08-30 11:21:08,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:21:08,913 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:21:08,934 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-08-30 11:21:08,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:21:08,945 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:21:08,950 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:21:08,960 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:21:08,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08 WrapperNode [2023-08-30 11:21:08,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:21:08,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:21:08,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:21:08,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:21:08,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:08,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,028 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 309 [2023-08-30 11:21:09,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:21:09,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:21:09,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:21:09,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:21:09,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,078 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:21:09,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:21:09,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:21:09,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:21:09,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (1/1) ... [2023-08-30 11:21:09,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:21:09,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:21:09,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:21:09,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:21:09,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:21:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:21:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:21:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:21:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:21:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:21:09,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:21:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:21:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:21:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:21:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:21:09,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:21:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:21:09,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:21:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:21:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:21:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:21:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:21:09,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:21:09,158 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:21:09,321 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:21:09,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:21:09,766 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:21:10,123 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:21:10,123 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:21:10,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:10 BoogieIcfgContainer [2023-08-30 11:21:10,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:21:10,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:21:10,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:21:10,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:21:10,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:21:08" (1/3) ... [2023-08-30 11:21:10,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118477d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:21:10, skipping insertion in model container [2023-08-30 11:21:10,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:21:08" (2/3) ... [2023-08-30 11:21:10,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118477d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:21:10, skipping insertion in model container [2023-08-30 11:21:10,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:21:10" (3/3) ... [2023-08-30 11:21:10,134 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-08-30 11:21:10,143 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:21:10,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:21:10,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 11:21:10,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:21:10,317 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-30 11:21:10,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 236 transitions, 516 flow [2023-08-30 11:21:10,442 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2023-08-30 11:21:10,447 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:21:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 221 events. 14/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-08-30 11:21:10,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 236 transitions, 516 flow [2023-08-30 11:21:10,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 205 transitions, 437 flow [2023-08-30 11:21:10,465 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:21:10,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 205 transitions, 437 flow [2023-08-30 11:21:10,482 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 205 transitions, 437 flow [2023-08-30 11:21:10,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 437 flow [2023-08-30 11:21:10,554 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-08-30 11:21:10,554 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:21:10,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 205 events. 13/205 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-08-30 11:21:10,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 5456 [2023-08-30 11:21:18,771 INFO L134 LiptonReduction]: Checked pairs total: 22240 [2023-08-30 11:21:18,772 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 11:21:18,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:21:18,791 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;@9c9583, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:21:18,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-08-30 11:21:18,792 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 11:21:18,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:21:18,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:18,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 11:21:18,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:21:18,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1306, now seen corresponding path program 1 times [2023-08-30 11:21:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:18,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150995537] [2023-08-30 11:21:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150995537] [2023-08-30 11:21:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150995537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:21:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:21:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 11:21:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071239473] [2023-08-30 11:21:18,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:21:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 11:21:18,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 11:21:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 11:21:18,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 429 [2023-08-30 11:21:18,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:18,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:18,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 429 [2023-08-30 11:21:18,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:21:21,134 INFO L130 PetriNetUnfolder]: 11217/15499 cut-off events. [2023-08-30 11:21:21,135 INFO L131 PetriNetUnfolder]: For 802/802 co-relation queries the response was YES. [2023-08-30 11:21:21,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31801 conditions, 15499 events. 11217/15499 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83743 event pairs, 9848 based on Foata normal form. 0/6999 useless extension candidates. Maximal degree in co-relation 31700. Up to 15100 conditions per place. [2023-08-30 11:21:21,246 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 48 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-08-30 11:21:21,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 237 flow [2023-08-30 11:21:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 11:21:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 11:21:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 416 transitions. [2023-08-30 11:21:21,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-30 11:21:21,259 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 416 transitions. [2023-08-30 11:21:21,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 416 transitions. [2023-08-30 11:21:21,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:21:21,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 416 transitions. [2023-08-30 11:21:21,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:21,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:21,272 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:21,273 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 157 flow. Second operand 2 states and 416 transitions. [2023-08-30 11:21:21,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 237 flow [2023-08-30 11:21:21,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:21:21,347 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 124 flow [2023-08-30 11:21:21,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-08-30 11:21:21,351 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2023-08-30 11:21:21,351 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 124 flow [2023-08-30 11:21:21,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:21,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:21,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:21:21,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:21:21,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:21:21,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash 41847, now seen corresponding path program 1 times [2023-08-30 11:21:21,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:21,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526634345] [2023-08-30 11:21:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:21,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:21,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526634345] [2023-08-30 11:21:21,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526634345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:21:21,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:21:21,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:21:21,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808490168] [2023-08-30 11:21:21,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:21:21,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:21:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:21,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:21:21,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:21:21,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-08-30 11:21:21,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:21,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:21,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-08-30 11:21:21,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:21:24,893 INFO L130 PetriNetUnfolder]: 22433/30995 cut-off events. [2023-08-30 11:21:24,893 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-08-30 11:21:24,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62367 conditions, 30995 events. 22433/30995 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 182088 event pairs, 19696 based on Foata normal form. 0/14077 useless extension candidates. Maximal degree in co-relation 62364. Up to 15100 conditions per place. [2023-08-30 11:21:25,041 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 91 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 11:21:25,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 410 flow [2023-08-30 11:21:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:21:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:21:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-30 11:21:25,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864024864024864 [2023-08-30 11:21:25,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-30 11:21:25,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-30 11:21:25,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:21:25,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-30 11:21:25,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:25,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:25,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:25,055 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 124 flow. Second operand 3 states and 626 transitions. [2023-08-30 11:21:25,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 410 flow [2023-08-30 11:21:25,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:21:25,058 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 138 flow [2023-08-30 11:21:25,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-08-30 11:21:25,059 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-08-30 11:21:25,059 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 138 flow [2023-08-30 11:21:25,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:25,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:25,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:21:25,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:21:25,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:21:25,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1299021, now seen corresponding path program 1 times [2023-08-30 11:21:25,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:25,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809736934] [2023-08-30 11:21:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:25,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:25,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:25,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809736934] [2023-08-30 11:21:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809736934] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:21:25,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639958566] [2023-08-30 11:21:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:25,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:21:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:21:25,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:21:25,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:21:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:25,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:21:25,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:21:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:25,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:21:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:25,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639958566] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:21:25,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:21:25,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:21:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695602054] [2023-08-30 11:21:25,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:21:25,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:21:25,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:21:25,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:21:25,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-08-30 11:21:25,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:25,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:25,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-08-30 11:21:25,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:21:32,499 INFO L130 PetriNetUnfolder]: 56084/77486 cut-off events. [2023-08-30 11:21:32,499 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2023-08-30 11:21:32,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155924 conditions, 77486 events. 56084/77486 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 3854. Compared 507417 event pairs, 49240 based on Foata normal form. 0/35236 useless extension candidates. Maximal degree in co-relation 155919. Up to 15099 conditions per place. [2023-08-30 11:21:32,862 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 222 selfloop transitions, 9 changer transitions 0/240 dead transitions. [2023-08-30 11:21:32,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 240 transitions, 1016 flow [2023-08-30 11:21:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:21:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:21:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1473 transitions. [2023-08-30 11:21:32,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905094905094905 [2023-08-30 11:21:32,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1473 transitions. [2023-08-30 11:21:32,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1473 transitions. [2023-08-30 11:21:32,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:21:32,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1473 transitions. [2023-08-30 11:21:32,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:32,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:32,881 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:32,881 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 138 flow. Second operand 7 states and 1473 transitions. [2023-08-30 11:21:32,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 240 transitions, 1016 flow [2023-08-30 11:21:32,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 240 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:21:32,887 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 195 flow [2023-08-30 11:21:32,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-30 11:21:32,888 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-08-30 11:21:32,888 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 195 flow [2023-08-30 11:21:32,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:32,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:32,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:21:32,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:21:33,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:21:33,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:21:33,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:33,095 INFO L85 PathProgramCache]: Analyzing trace with hash 40271416, now seen corresponding path program 1 times [2023-08-30 11:21:33,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:33,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438764193] [2023-08-30 11:21:33,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:33,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438764193] [2023-08-30 11:21:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438764193] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:21:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994484251] [2023-08-30 11:21:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:33,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:21:33,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:21:33,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:21:33,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:21:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:33,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:21:33,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:21:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:33,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:21:33,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994484251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:21:33,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:21:33,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:21:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2236946] [2023-08-30 11:21:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:21:33,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:21:33,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:21:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:21:33,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-08-30 11:21:33,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:33,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:33,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-08-30 11:21:33,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:21:40,355 INFO L130 PetriNetUnfolder]: 56081/77482 cut-off events. [2023-08-30 11:21:40,356 INFO L131 PetriNetUnfolder]: For 501/501 co-relation queries the response was YES. [2023-08-30 11:21:40,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155926 conditions, 77482 events. 56081/77482 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 505618 event pairs, 49240 based on Foata normal form. 2/35319 useless extension candidates. Maximal degree in co-relation 155918. Up to 45290 conditions per place. [2023-08-30 11:21:40,680 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 136 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2023-08-30 11:21:40,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 148 transitions, 642 flow [2023-08-30 11:21:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:21:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:21:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2023-08-30 11:21:40,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773892773892774 [2023-08-30 11:21:40,684 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2023-08-30 11:21:40,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2023-08-30 11:21:40,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:21:40,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2023-08-30 11:21:40,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:40,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:40,692 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:40,692 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 195 flow. Second operand 5 states and 1024 transitions. [2023-08-30 11:21:40,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 148 transitions, 642 flow [2023-08-30 11:21:40,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 148 transitions, 634 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:21:40,695 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 166 flow [2023-08-30 11:21:40,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-30 11:21:40,696 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-08-30 11:21:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 166 flow [2023-08-30 11:21:40,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:40,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:40,697 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:21:40,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:21:40,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:21:40,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:21:40,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:40,904 INFO L85 PathProgramCache]: Analyzing trace with hash 46180599, now seen corresponding path program 2 times [2023-08-30 11:21:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893812391] [2023-08-30 11:21:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:40,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:41,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:41,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893812391] [2023-08-30 11:21:41,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893812391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:21:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430694810] [2023-08-30 11:21:41,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:21:41,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:21:41,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:21:41,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:21:41,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:21:41,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:21:41,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:21:41,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 11:21:41,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:21:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:21:41,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:21:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430694810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:21:41,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:21:41,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:21:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969693931] [2023-08-30 11:21:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:21:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:21:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:21:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:21:41,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 11:21:41,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:41,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:41,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 11:21:41,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:21:47,969 INFO L130 PetriNetUnfolder]: 56081/77481 cut-off events. [2023-08-30 11:21:47,969 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2023-08-30 11:21:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155920 conditions, 77481 events. 56081/77481 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 3858. Compared 507766 event pairs, 49240 based on Foata normal form. 1/34997 useless extension candidates. Maximal degree in co-relation 155911. Up to 75481 conditions per place. [2023-08-30 11:21:48,316 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 49 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-08-30 11:21:48,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 256 flow [2023-08-30 11:21:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:21:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:21:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-30 11:21:48,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45143745143745145 [2023-08-30 11:21:48,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-30 11:21:48,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-30 11:21:48,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:21:48,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-30 11:21:48,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:48,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:48,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:48,323 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 166 flow. Second operand 3 states and 581 transitions. [2023-08-30 11:21:48,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 256 flow [2023-08-30 11:21:48,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 241 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 11:21:48,325 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 143 flow [2023-08-30 11:21:48,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-08-30 11:21:48,326 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-08-30 11:21:48,326 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 143 flow [2023-08-30 11:21:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:48,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:48,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:21:48,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:21:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:21:48,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:21:48,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1381981626, now seen corresponding path program 1 times [2023-08-30 11:21:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:48,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950951885] [2023-08-30 11:21:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:48,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950951885] [2023-08-30 11:21:48,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950951885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:21:48,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:21:48,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:21:48,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192483002] [2023-08-30 11:21:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:21:48,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:21:48,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:48,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:21:48,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:21:48,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 11:21:48,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:48,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:48,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 11:21:48,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:21:55,656 INFO L130 PetriNetUnfolder]: 60591/82691 cut-off events. [2023-08-30 11:21:55,656 INFO L131 PetriNetUnfolder]: For 1000/1000 co-relation queries the response was YES. [2023-08-30 11:21:55,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167680 conditions, 82691 events. 60591/82691 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 4149. Compared 533558 event pairs, 42805 based on Foata normal form. 0/38036 useless extension candidates. Maximal degree in co-relation 167675. Up to 76237 conditions per place. [2023-08-30 11:21:55,997 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 73 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-08-30 11:21:55,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 355 flow [2023-08-30 11:21:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:21:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:21:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-30 11:21:55,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473970473970474 [2023-08-30 11:21:55,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-30 11:21:55,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-30 11:21:55,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:21:56,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-30 11:21:56,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:56,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:56,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:56,004 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 143 flow. Second operand 3 states and 610 transitions. [2023-08-30 11:21:56,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 355 flow [2023-08-30 11:21:56,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:21:56,006 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 167 flow [2023-08-30 11:21:56,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-30 11:21:56,007 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 11:21:56,007 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 167 flow [2023-08-30 11:21:56,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:21:56,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:21:56,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:21:56,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:21:56,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:21:56,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:21:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -726265181, now seen corresponding path program 1 times [2023-08-30 11:21:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:21:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080091461] [2023-08-30 11:21:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:21:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:21:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:21:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:21:56,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:21:56,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080091461] [2023-08-30 11:21:56,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080091461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:21:56,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:21:56,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:21:56,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828741379] [2023-08-30 11:21:56,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:21:56,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:21:56,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:21:56,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:21:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:21:56,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-08-30 11:21:56,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 167 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) [2023-08-30 11:21:56,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:21:56,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-08-30 11:21:56,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:02,345 INFO L130 PetriNetUnfolder]: 51998/72364 cut-off events. [2023-08-30 11:22:02,345 INFO L131 PetriNetUnfolder]: For 4443/4443 co-relation queries the response was YES. [2023-08-30 11:22:02,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157651 conditions, 72364 events. 51998/72364 cut-off events. For 4443/4443 co-relation queries the response was YES. Maximal size of possible extension queue 3742. Compared 479360 event pairs, 42349 based on Foata normal form. 0/38904 useless extension candidates. Maximal degree in co-relation 157645. Up to 65346 conditions per place. [2023-08-30 11:22:02,880 INFO L137 encePairwiseOnDemand]: 416/429 looper letters, 106 selfloop transitions, 4 changer transitions 10/129 dead transitions. [2023-08-30 11:22:02,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 129 transitions, 594 flow [2023-08-30 11:22:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:22:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:22:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 972 transitions. [2023-08-30 11:22:02,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45314685314685316 [2023-08-30 11:22:02,883 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 972 transitions. [2023-08-30 11:22:02,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 972 transitions. [2023-08-30 11:22:02,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:02,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 972 transitions. [2023-08-30 11:22:02,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:02,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:02,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:02,890 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 167 flow. Second operand 5 states and 972 transitions. [2023-08-30 11:22:02,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 129 transitions, 594 flow [2023-08-30 11:22:02,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:22:02,893 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 208 flow [2023-08-30 11:22:02,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2023-08-30 11:22:02,894 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-08-30 11:22:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 208 flow [2023-08-30 11:22:02,894 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) [2023-08-30 11:22:02,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:02,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:02,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:22:02,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:02,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash -108241470, now seen corresponding path program 1 times [2023-08-30 11:22:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046810942] [2023-08-30 11:22:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:03,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046810942] [2023-08-30 11:22:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046810942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:22:03,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:22:03,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:22:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541697197] [2023-08-30 11:22:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:22:03,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:22:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:22:03,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:22:03,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-08-30 11:22:03,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 208 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) [2023-08-30 11:22:03,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:03,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-08-30 11:22:03,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:09,230 INFO L130 PetriNetUnfolder]: 47120/66196 cut-off events. [2023-08-30 11:22:09,230 INFO L131 PetriNetUnfolder]: For 21270/21270 co-relation queries the response was YES. [2023-08-30 11:22:09,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160811 conditions, 66196 events. 47120/66196 cut-off events. For 21270/21270 co-relation queries the response was YES. Maximal size of possible extension queue 3705. Compared 446657 event pairs, 29764 based on Foata normal form. 1288/40991 useless extension candidates. Maximal degree in co-relation 160802. Up to 46454 conditions per place. [2023-08-30 11:22:09,567 INFO L137 encePairwiseOnDemand]: 417/429 looper letters, 75 selfloop transitions, 4 changer transitions 26/114 dead transitions. [2023-08-30 11:22:09,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 557 flow [2023-08-30 11:22:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:22:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:22:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2023-08-30 11:22:09,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2023-08-30 11:22:09,571 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1128 transitions. [2023-08-30 11:22:09,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1128 transitions. [2023-08-30 11:22:09,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:09,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1128 transitions. [2023-08-30 11:22:09,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:09,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:09,578 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:09,578 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 208 flow. Second operand 6 states and 1128 transitions. [2023-08-30 11:22:09,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 557 flow [2023-08-30 11:22:09,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 551 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 11:22:09,612 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 234 flow [2023-08-30 11:22:09,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2023-08-30 11:22:09,613 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-08-30 11:22:09,613 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 234 flow [2023-08-30 11:22:09,614 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) [2023-08-30 11:22:09,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:09,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:09,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:22:09,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:09,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:09,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1972283143, now seen corresponding path program 1 times [2023-08-30 11:22:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:09,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230472919] [2023-08-30 11:22:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:09,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:09,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230472919] [2023-08-30 11:22:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230472919] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:22:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141376669] [2023-08-30 11:22:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:09,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:09,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:22:09,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:22:09,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:22:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:09,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 11:22:09,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:22:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:09,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:22:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141376669] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:22:09,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:22:09,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 11:22:09,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616376233] [2023-08-30 11:22:09,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:22:09,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 11:22:09,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:09,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 11:22:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-08-30 11:22:10,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-08-30 11:22:10,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 234 flow. Second operand has 11 states, 11 states have (on average 169.45454545454547) internal successors, (1864), 11 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:10,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:10,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-08-30 11:22:10,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:15,371 INFO L130 PetriNetUnfolder]: 38560/54065 cut-off events. [2023-08-30 11:22:15,371 INFO L131 PetriNetUnfolder]: For 36626/36626 co-relation queries the response was YES. [2023-08-30 11:22:15,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144279 conditions, 54065 events. 38560/54065 cut-off events. For 36626/36626 co-relation queries the response was YES. Maximal size of possible extension queue 2951. Compared 355364 event pairs, 27718 based on Foata normal form. 588/33300 useless extension candidates. Maximal degree in co-relation 144267. Up to 42965 conditions per place. [2023-08-30 11:22:15,836 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 134 selfloop transitions, 6 changer transitions 21/170 dead transitions. [2023-08-30 11:22:15,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 170 transitions, 946 flow [2023-08-30 11:22:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:22:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:22:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1330 transitions. [2023-08-30 11:22:15,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2023-08-30 11:22:15,840 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1330 transitions. [2023-08-30 11:22:15,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1330 transitions. [2023-08-30 11:22:15,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:15,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1330 transitions. [2023-08-30 11:22:15,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:15,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:15,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:15,847 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 234 flow. Second operand 7 states and 1330 transitions. [2023-08-30 11:22:15,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 170 transitions, 946 flow [2023-08-30 11:22:15,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 920 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 11:22:15,878 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 285 flow [2023-08-30 11:22:15,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-08-30 11:22:15,879 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-08-30 11:22:15,879 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 285 flow [2023-08-30 11:22:15,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.45454545454547) internal successors, (1864), 11 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:15,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:15,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:15,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:22:16,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:16,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:16,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1704660436, now seen corresponding path program 1 times [2023-08-30 11:22:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693338669] [2023-08-30 11:22:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693338669] [2023-08-30 11:22:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693338669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:22:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429813672] [2023-08-30 11:22:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:16,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:22:16,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:22:16,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:22:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:16,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 11:22:16,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:22:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:16,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:22:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429813672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:22:16,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:22:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 11:22:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160886098] [2023-08-30 11:22:16,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:22:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 11:22:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 11:22:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 11:22:16,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-08-30 11:22:16,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 285 flow. Second operand has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:16,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:16,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-08-30 11:22:16,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:21,339 INFO L130 PetriNetUnfolder]: 35402/49783 cut-off events. [2023-08-30 11:22:21,340 INFO L131 PetriNetUnfolder]: For 55191/55191 co-relation queries the response was YES. [2023-08-30 11:22:21,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149732 conditions, 49783 events. 35402/49783 cut-off events. For 55191/55191 co-relation queries the response was YES. Maximal size of possible extension queue 2943. Compared 325952 event pairs, 22223 based on Foata normal form. 48/29780 useless extension candidates. Maximal degree in co-relation 149718. Up to 34841 conditions per place. [2023-08-30 11:22:21,634 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 74 selfloop transitions, 5 changer transitions 28/116 dead transitions. [2023-08-30 11:22:21,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 671 flow [2023-08-30 11:22:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:22:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:22:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1279 transitions. [2023-08-30 11:22:21,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259074259074259 [2023-08-30 11:22:21,638 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1279 transitions. [2023-08-30 11:22:21,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1279 transitions. [2023-08-30 11:22:21,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:21,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1279 transitions. [2023-08-30 11:22:21,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.71428571428572) internal successors, (1279), 7 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:21,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:21,646 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:21,646 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 285 flow. Second operand 7 states and 1279 transitions. [2023-08-30 11:22:21,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 671 flow [2023-08-30 11:22:21,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 116 transitions, 619 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-30 11:22:21,722 INFO L231 Difference]: Finished difference. Result has 86 places, 63 transitions, 251 flow [2023-08-30 11:22:21,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=86, PETRI_TRANSITIONS=63} [2023-08-30 11:22:21,723 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2023-08-30 11:22:21,723 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 63 transitions, 251 flow [2023-08-30 11:22:21,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:21,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:21,724 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:21,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:22:21,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 11:22:21,930 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:21,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash -272064547, now seen corresponding path program 2 times [2023-08-30 11:22:21,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:21,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104349198] [2023-08-30 11:22:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:22,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:22,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104349198] [2023-08-30 11:22:22,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104349198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:22:22,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066558097] [2023-08-30 11:22:22,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:22:22,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:22,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:22:22,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:22:22,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:22:22,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 11:22:22,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:22:22,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 11:22:22,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:22:22,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 11:22:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:22:22,666 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 18 treesize of output 20 [2023-08-30 11:22:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:22:22,709 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 18 treesize of output 20 [2023-08-30 11:22:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:22,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:22:22,789 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_262) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2023-08-30 11:22:22,821 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int)) (v_ArrVal_262 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_262) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-30 11:22:22,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:22:22,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 11:22:22,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:22:22,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-30 11:22:22,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-30 11:22:22,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-30 11:22:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 11:22:22,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066558097] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:22:22,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:22:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 11:22:22,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229677118] [2023-08-30 11:22:22,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:22:22,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 11:22:22,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 11:22:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=255, Unknown=2, NotChecked=66, Total=380 [2023-08-30 11:22:23,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 429 [2023-08-30 11:22:23,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 63 transitions, 251 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:23,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:23,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 429 [2023-08-30 11:22:23,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:28,930 INFO L130 PetriNetUnfolder]: 39901/55554 cut-off events. [2023-08-30 11:22:28,930 INFO L131 PetriNetUnfolder]: For 42237/42237 co-relation queries the response was YES. [2023-08-30 11:22:29,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154317 conditions, 55554 events. 39901/55554 cut-off events. For 42237/42237 co-relation queries the response was YES. Maximal size of possible extension queue 2894. Compared 351547 event pairs, 21402 based on Foata normal form. 0/33537 useless extension candidates. Maximal degree in co-relation 154302. Up to 54319 conditions per place. [2023-08-30 11:22:29,251 INFO L137 encePairwiseOnDemand]: 417/429 looper letters, 68 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-30 11:22:29,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 487 flow [2023-08-30 11:22:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:22:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:22:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1119 transitions. [2023-08-30 11:22:29,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3726273726273726 [2023-08-30 11:22:29,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1119 transitions. [2023-08-30 11:22:29,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1119 transitions. [2023-08-30 11:22:29,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:29,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1119 transitions. [2023-08-30 11:22:29,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:29,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:29,260 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:29,260 INFO L175 Difference]: Start difference. First operand has 86 places, 63 transitions, 251 flow. Second operand 7 states and 1119 transitions. [2023-08-30 11:22:29,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 487 flow [2023-08-30 11:22:29,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 461 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 11:22:29,352 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 304 flow [2023-08-30 11:22:29,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-08-30 11:22:29,353 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2023-08-30 11:22:29,353 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 304 flow [2023-08-30 11:22:29,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:29,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:29,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:29,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:22:29,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:29,561 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:29,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:29,562 INFO L85 PathProgramCache]: Analyzing trace with hash 155935032, now seen corresponding path program 1 times [2023-08-30 11:22:29,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:29,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303987954] [2023-08-30 11:22:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:29,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:29,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:29,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303987954] [2023-08-30 11:22:29,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303987954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:22:29,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324172943] [2023-08-30 11:22:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:29,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:29,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:22:29,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:22:29,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:22:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:29,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 11:22:29,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:22:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:29,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:22:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:29,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324172943] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:22:29,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:22:29,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 11:22:29,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024633948] [2023-08-30 11:22:29,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:22:29,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 11:22:29,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 11:22:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-08-30 11:22:30,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-08-30 11:22:30,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 304 flow. Second operand has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:30,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:30,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-08-30 11:22:30,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:35,026 INFO L130 PetriNetUnfolder]: 32815/45861 cut-off events. [2023-08-30 11:22:35,026 INFO L131 PetriNetUnfolder]: For 34225/34225 co-relation queries the response was YES. [2023-08-30 11:22:35,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133679 conditions, 45861 events. 32815/45861 cut-off events. For 34225/34225 co-relation queries the response was YES. Maximal size of possible extension queue 2453. Compared 295628 event pairs, 16383 based on Foata normal form. 948/28460 useless extension candidates. Maximal degree in co-relation 133665. Up to 28724 conditions per place. [2023-08-30 11:22:35,300 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 211 selfloop transitions, 18 changer transitions 14/253 dead transitions. [2023-08-30 11:22:35,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 253 transitions, 1475 flow [2023-08-30 11:22:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:22:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:22:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1905 transitions. [2023-08-30 11:22:35,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44405594405594406 [2023-08-30 11:22:35,304 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1905 transitions. [2023-08-30 11:22:35,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1905 transitions. [2023-08-30 11:22:35,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:35,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1905 transitions. [2023-08-30 11:22:35,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.5) internal successors, (1905), 10 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:35,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 429.0) internal successors, (4719), 11 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:35,312 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 429.0) internal successors, (4719), 11 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:35,312 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 304 flow. Second operand 10 states and 1905 transitions. [2023-08-30 11:22:35,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 253 transitions, 1475 flow [2023-08-30 11:22:35,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 253 transitions, 1436 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-30 11:22:35,366 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 480 flow [2023-08-30 11:22:35,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=480, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2023-08-30 11:22:35,367 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-08-30 11:22:35,367 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 480 flow [2023-08-30 11:22:35,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:35,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:35,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:35,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:22:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:35,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:35,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -272064546, now seen corresponding path program 1 times [2023-08-30 11:22:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:35,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958201380] [2023-08-30 11:22:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:35,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958201380] [2023-08-30 11:22:35,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958201380] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:22:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190128154] [2023-08-30 11:22:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:35,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:22:35,959 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:22:35,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:22:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:36,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 11:22:36,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:22:36,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 11:22:36,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:22:36,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:22:36,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:22:36,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:22:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:36,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:22:36,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:22:36,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 11:22:36,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:22:36,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-30 11:22:36,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-30 11:22:36,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-08-30 11:22:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:36,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190128154] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:22:36,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:22:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-30 11:22:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681697969] [2023-08-30 11:22:36,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:22:36,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 11:22:36,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 11:22:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=315, Unknown=4, NotChecked=0, Total=380 [2023-08-30 11:22:36,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 429 [2023-08-30 11:22:36,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 480 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:36,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:36,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 429 [2023-08-30 11:22:36,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:42,266 INFO L130 PetriNetUnfolder]: 37226/52019 cut-off events. [2023-08-30 11:22:42,266 INFO L131 PetriNetUnfolder]: For 70058/70058 co-relation queries the response was YES. [2023-08-30 11:22:42,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177212 conditions, 52019 events. 37226/52019 cut-off events. For 70058/70058 co-relation queries the response was YES. Maximal size of possible extension queue 2548. Compared 328080 event pairs, 20612 based on Foata normal form. 0/31886 useless extension candidates. Maximal degree in co-relation 177195. Up to 50865 conditions per place. [2023-08-30 11:22:42,603 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 78 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2023-08-30 11:22:42,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 98 transitions, 756 flow [2023-08-30 11:22:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:22:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:22:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1116 transitions. [2023-08-30 11:22:42,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37162837162837165 [2023-08-30 11:22:42,605 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1116 transitions. [2023-08-30 11:22:42,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1116 transitions. [2023-08-30 11:22:42,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:42,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1116 transitions. [2023-08-30 11:22:42,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.42857142857142) internal successors, (1116), 7 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:42,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:42,610 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:42,610 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 480 flow. Second operand 7 states and 1116 transitions. [2023-08-30 11:22:42,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 98 transitions, 756 flow [2023-08-30 11:22:43,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 694 flow, removed 28 selfloop flow, removed 5 redundant places. [2023-08-30 11:22:43,142 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 444 flow [2023-08-30 11:22:43,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2023-08-30 11:22:43,143 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-08-30 11:22:43,143 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 444 flow [2023-08-30 11:22:43,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:43,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:43,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:43,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 11:22:43,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 11:22:43,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:43,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:43,345 INFO L85 PathProgramCache]: Analyzing trace with hash -272064545, now seen corresponding path program 1 times [2023-08-30 11:22:43,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:43,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379082340] [2023-08-30 11:22:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:43,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:22:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379082340] [2023-08-30 11:22:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379082340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:22:43,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:22:43,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:22:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192996950] [2023-08-30 11:22:43,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:22:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:22:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:22:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:22:43,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 11:22:43,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:43,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:43,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 11:22:43,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:22:49,588 INFO L130 PetriNetUnfolder]: 45075/62590 cut-off events. [2023-08-30 11:22:49,588 INFO L131 PetriNetUnfolder]: For 63948/63948 co-relation queries the response was YES. [2023-08-30 11:22:49,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202095 conditions, 62590 events. 45075/62590 cut-off events. For 63948/63948 co-relation queries the response was YES. Maximal size of possible extension queue 3349. Compared 410588 event pairs, 21513 based on Foata normal form. 4/37621 useless extension candidates. Maximal degree in co-relation 202079. Up to 36680 conditions per place. [2023-08-30 11:22:49,938 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 98 selfloop transitions, 8 changer transitions 0/116 dead transitions. [2023-08-30 11:22:49,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 782 flow [2023-08-30 11:22:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:22:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:22:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 11:22:49,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48096348096348096 [2023-08-30 11:22:49,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 11:22:49,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 11:22:49,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:22:49,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 11:22:49,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:49,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:49,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:49,942 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 444 flow. Second operand 3 states and 619 transitions. [2023-08-30 11:22:49,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 782 flow [2023-08-30 11:22:50,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 760 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 11:22:50,743 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 400 flow [2023-08-30 11:22:50,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-08-30 11:22:50,743 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-08-30 11:22:50,744 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 400 flow [2023-08-30 11:22:50,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:50,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:22:50,744 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:22:50,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:22:50,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:22:50,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:22:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 345959171, now seen corresponding path program 1 times [2023-08-30 11:22:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:22:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430541973] [2023-08-30 11:22:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:22:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:51,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:22:51,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430541973] [2023-08-30 11:22:51,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430541973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:22:51,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772554617] [2023-08-30 11:22:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:22:51,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:22:51,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:22:51,170 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:22:51,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:22:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:22:51,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 11:22:51,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:22:51,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 11:22:51,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:22:51,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:22:51,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:22:51,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:22:51,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-08-30 11:22:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:22:51,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:22:51,600 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_399 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_399) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 4294967296)) is different from false [2023-08-30 11:22:51,614 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_37| Int) (v_ArrVal_399 (Array Int Int))) (or (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_37| v_ArrVal_399) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_37| |c_#StackHeapBarrier|))) is different from false [2023-08-30 11:22:51,629 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_37| Int) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_398) |v_thread1Thread1of1ForFork0_~#t2~0.base_37| v_ArrVal_399) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_37| |c_#StackHeapBarrier|))) is different from false [2023-08-30 11:22:51,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:22:51,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-30 11:22:51,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:22:51,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-30 11:22:51,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-08-30 11:22:51,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-08-30 11:22:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 11:22:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772554617] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:22:51,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:22:51,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 11:22:51,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214545237] [2023-08-30 11:22:51,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:22:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 11:22:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:22:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 11:22:51,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=296, Unknown=3, NotChecked=108, Total=462 [2023-08-30 11:22:51,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 429 [2023-08-30 11:22:51,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 400 flow. Second operand has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:22:51,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:22:51,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 429 [2023-08-30 11:22:51,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:23:04,367 INFO L130 PetriNetUnfolder]: 85604/117938 cut-off events. [2023-08-30 11:23:04,368 INFO L131 PetriNetUnfolder]: For 163422/163422 co-relation queries the response was YES. [2023-08-30 11:23:04,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388394 conditions, 117938 events. 85604/117938 cut-off events. For 163422/163422 co-relation queries the response was YES. Maximal size of possible extension queue 5600. Compared 803812 event pairs, 32112 based on Foata normal form. 0/75126 useless extension candidates. Maximal degree in co-relation 388377. Up to 63872 conditions per place. [2023-08-30 11:23:05,102 INFO L137 encePairwiseOnDemand]: 416/429 looper letters, 166 selfloop transitions, 31 changer transitions 0/202 dead transitions. [2023-08-30 11:23:05,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 202 transitions, 1406 flow [2023-08-30 11:23:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 11:23:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 11:23:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2023 transitions. [2023-08-30 11:23:05,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3627398242782858 [2023-08-30 11:23:05,105 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2023 transitions. [2023-08-30 11:23:05,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2023 transitions. [2023-08-30 11:23:05,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:23:05,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2023 transitions. [2023-08-30 11:23:05,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:05,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 429.0) internal successors, (6006), 14 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:05,113 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 429.0) internal successors, (6006), 14 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:05,113 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 400 flow. Second operand 13 states and 2023 transitions. [2023-08-30 11:23:05,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 202 transitions, 1406 flow [2023-08-30 11:23:05,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 202 transitions, 1390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:23:05,515 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 607 flow [2023-08-30 11:23:05,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=607, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2023-08-30 11:23:05,515 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-08-30 11:23:05,516 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 607 flow [2023-08-30 11:23:05,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:05,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:23:05,516 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:23:05,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 11:23:05,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 11:23:05,717 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:23:05,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:23:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash 345959173, now seen corresponding path program 1 times [2023-08-30 11:23:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:23:05,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306527332] [2023-08-30 11:23:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:23:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:23:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:23:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:23:05,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:23:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306527332] [2023-08-30 11:23:05,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306527332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:23:05,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:23:05,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:23:05,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430758513] [2023-08-30 11:23:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:23:05,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:23:05,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:23:05,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:23:05,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:23:05,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-08-30 11:23:05,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:05,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:23:05,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-08-30 11:23:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:23:21,147 INFO L130 PetriNetUnfolder]: 100504/138425 cut-off events. [2023-08-30 11:23:21,148 INFO L131 PetriNetUnfolder]: For 218621/218784 co-relation queries the response was YES. [2023-08-30 11:23:21,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501418 conditions, 138425 events. 100504/138425 cut-off events. For 218621/218784 co-relation queries the response was YES. Maximal size of possible extension queue 6195. Compared 980919 event pairs, 59201 based on Foata normal form. 21/96185 useless extension candidates. Maximal degree in co-relation 501396. Up to 104389 conditions per place. [2023-08-30 11:23:22,254 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 125 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-08-30 11:23:22,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 155 transitions, 1187 flow [2023-08-30 11:23:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:23:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:23:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-08-30 11:23:22,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48174048174048173 [2023-08-30 11:23:22,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-08-30 11:23:22,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-08-30 11:23:22,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:23:22,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-08-30 11:23:22,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:22,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:22,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:22,258 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 607 flow. Second operand 3 states and 620 transitions. [2023-08-30 11:23:22,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 155 transitions, 1187 flow [2023-08-30 11:23:23,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 1180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:23:23,995 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 646 flow [2023-08-30 11:23:23,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2023-08-30 11:23:23,995 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-08-30 11:23:23,996 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 646 flow [2023-08-30 11:23:23,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:23,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:23:23,996 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:23:23,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 11:23:23,997 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-08-30 11:23:23,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:23:23,997 INFO L85 PathProgramCache]: Analyzing trace with hash 345959170, now seen corresponding path program 2 times [2023-08-30 11:23:23,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:23:23,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734672958] [2023-08-30 11:23:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:23:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:23:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:23:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:23:24,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:23:24,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734672958] [2023-08-30 11:23:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734672958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:23:24,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017806257] [2023-08-30 11:23:24,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:23:24,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:23:24,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:23:24,334 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:23:24,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 11:23:24,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 11:23:24,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:23:24,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 11:23:24,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:23:24,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-30 11:23:24,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:23:24,574 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 18 treesize of output 20 [2023-08-30 11:23:24,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:23:24,634 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 18 treesize of output 20 [2023-08-30 11:23:24,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-08-30 11:23:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:23:24,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:23:24,708 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_469) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 9223372039002259456))) is different from false [2023-08-30 11:23:24,718 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (|v_thread1Thread1of1ForFork0_~#t2~0.base_39| Int)) (or (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_39| |c_#StackHeapBarrier|) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_39| v_ArrVal_469) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456)))) is different from false [2023-08-30 11:23:24,895 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_468 (Array Int Int)) (|v_thread1Thread1of1ForFork0_~#t2~0.base_39| Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_468) |v_thread1Thread1of1ForFork0_~#t2~0.base_39| v_ArrVal_469) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_39| |c_#StackHeapBarrier|))) is different from false [2023-08-30 11:23:24,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:23:24,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 11:23:24,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:23:24,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-30 11:23:24,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 11:23:24,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-30 11:23:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-30 11:23:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017806257] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:23:25,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:23:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-30 11:23:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321673258] [2023-08-30 11:23:25,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:23:25,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 11:23:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:23:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 11:23:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=296, Unknown=3, NotChecked=108, Total=462 [2023-08-30 11:23:25,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 429 [2023-08-30 11:23:25,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 646 flow. Second operand has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:23:25,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:23:25,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 429 [2023-08-30 11:23:25,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand