./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.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 e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:22:02,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:22:02,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:22:02,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:22:02,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:22:02,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:22:02,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:22:02,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:22:02,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:22:02,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:22:02,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:22:02,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:22:02,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:22:02,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:22:02,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:22:02,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:22:02,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:22:02,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:22:02,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:22:02,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:22:02,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:22:02,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:22:02,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:22:02,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:22:02,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:22:02,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:22:02,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:22:02,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:22:02,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:22:02,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:22:02,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:22:02,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:22:02,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:22:02,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:22:02,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:22:02,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:22:02,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:22:02,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:22:02,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:22:02,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:22:02,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:22:02,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:22:02,993 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:22:02,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:22:02,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:22:02,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:22:02,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:22:02,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:22:02,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:22:02,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:22:02,996 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:22:02,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:22:02,997 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:22:02,998 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:22:02,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:22:02,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:22:02,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:22:02,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:22:02,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:22:02,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:22:02,999 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:22:02,999 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:22:02,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:22:02,999 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:22:03,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:22:03,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:22:03,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:22:03,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:22:03,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:22:03,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:22:03,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:22:03,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:22:03,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:22:03,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:22:03,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:22:03,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:22:03,002 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:22:03,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:22:03,003 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:22:03,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:22:03,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:22:03,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:22:03,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:22:03,311 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:22:03,311 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:22:03,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-08-30 15:22:04,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:22:04,619 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:22:04,619 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-08-30 15:22:04,625 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62c26a08/4cf77dad8d7f452a81a01ebe7be3f8f0/FLAG01bb1bdad [2023-08-30 15:22:04,639 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62c26a08/4cf77dad8d7f452a81a01ebe7be3f8f0 [2023-08-30 15:22:04,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:22:04,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:22:04,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:22:04,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:22:04,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:22:04,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:04,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570e3766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04, skipping insertion in model container [2023-08-30 15:22:04,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:04,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:22:04,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:22:04,815 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c[3947,3960] [2023-08-30 15:22:04,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:22:04,843 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:22:04,886 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c[3947,3960] [2023-08-30 15:22:04,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:22:04,906 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:22:04,908 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:22:04,914 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:22:04,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04 WrapperNode [2023-08-30 15:22:04,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:22:04,916 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:22:04,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:22:04,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:22:04,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:04,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,003 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 357 [2023-08-30 15:22:05,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:22:05,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:22:05,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:22:05,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:22:05,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,064 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:22:05,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:22:05,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:22:05,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:22:05,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (1/1) ... [2023-08-30 15:22:05,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:22:05,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:05,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:22:05,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:22:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:22:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:22:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:22:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:22:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:22:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:22:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:22:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:22:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:22:05,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:22:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:22:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:22:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:22:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:22:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:22:05,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:22:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:22:05,148 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:22:05,283 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:22:05,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:22:05,698 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:22:05,986 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:22:05,986 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:22:05,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:22:05 BoogieIcfgContainer [2023-08-30 15:22:05,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:22:05,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:22:05,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:22:05,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:22:05,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:22:04" (1/3) ... [2023-08-30 15:22:05,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0abfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:22:05, skipping insertion in model container [2023-08-30 15:22:05,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:22:04" (2/3) ... [2023-08-30 15:22:05,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0abfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:22:05, skipping insertion in model container [2023-08-30 15:22:05,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:22:05" (3/3) ... [2023-08-30 15:22:05,999 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-08-30 15:22:06,007 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:22:06,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:22:06,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 15:22:06,017 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:22:06,157 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:22:06,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 299 transitions, 622 flow [2023-08-30 15:22:06,266 INFO L130 PetriNetUnfolder]: 22/296 cut-off events. [2023-08-30 15:22:06,267 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:22:06,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 22/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 357 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 250. Up to 3 conditions per place. [2023-08-30 15:22:06,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 299 transitions, 622 flow [2023-08-30 15:22:06,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 278 transitions, 571 flow [2023-08-30 15:22:06,301 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:22:06,311 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 278 transitions, 571 flow [2023-08-30 15:22:06,313 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 278 transitions, 571 flow [2023-08-30 15:22:06,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 278 transitions, 571 flow [2023-08-30 15:22:06,358 INFO L130 PetriNetUnfolder]: 21/278 cut-off events. [2023-08-30 15:22:06,359 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:22:06,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 278 events. 21/278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 355 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 250. Up to 3 conditions per place. [2023-08-30 15:22:06,363 INFO L119 LiptonReduction]: Number of co-enabled transitions 5314 [2023-08-30 15:22:17,171 INFO L134 LiptonReduction]: Checked pairs total: 14857 [2023-08-30 15:22:17,171 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-08-30 15:22:17,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:22:17,190 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;@e5fac1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:22:17,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-30 15:22:17,194 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:22:17,194 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:22:17,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:17,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:22:17,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:17,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash 44578, now seen corresponding path program 1 times [2023-08-30 15:22:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573281090] [2023-08-30 15:22:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:17,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573281090] [2023-08-30 15:22:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573281090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:17,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:17,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:22:17,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421728234] [2023-08-30 15:22:17,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:17,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 15:22:17,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:17,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:17,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 15:22:17,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:19,761 INFO L130 PetriNetUnfolder]: 12771/18109 cut-off events. [2023-08-30 15:22:19,761 INFO L131 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2023-08-30 15:22:19,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36931 conditions, 18109 events. 12771/18109 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 105451 event pairs, 11314 based on Foata normal form. 0/7489 useless extension candidates. Maximal degree in co-relation 17050. Up to 9059 conditions per place. [2023-08-30 15:22:19,885 INFO L137 encePairwiseOnDemand]: 573/594 looper letters, 95 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2023-08-30 15:22:19,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 434 flow [2023-08-30 15:22:19,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-30 15:22:19,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775533108866442 [2023-08-30 15:22:19,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-30 15:22:19,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-30 15:22:19,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:19,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-30 15:22:19,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,921 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 141 flow. Second operand 3 states and 851 transitions. [2023-08-30 15:22:19,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 434 flow [2023-08-30 15:22:19,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 416 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:22:19,949 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 170 flow [2023-08-30 15:22:19,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-30 15:22:19,956 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-08-30 15:22:19,959 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 170 flow [2023-08-30 15:22:19,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:19,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:22:19,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:22:19,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:19,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:19,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1383313, now seen corresponding path program 1 times [2023-08-30 15:22:19,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:19,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430004178] [2023-08-30 15:22:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430004178] [2023-08-30 15:22:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430004178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:20,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644890132] [2023-08-30 15:22:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:20,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:20,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:20,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:22:20,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:22:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:20,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:22:20,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:20,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:22:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:20,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644890132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:22:20,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:22:20,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:22:20,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920353257] [2023-08-30 15:22:20,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:22:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:22:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:22:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:22:20,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 15:22:20,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 243.14285714285714) internal successors, (1702), 7 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:20,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:20,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 15:22:20,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:24,426 INFO L130 PetriNetUnfolder]: 31935/45271 cut-off events. [2023-08-30 15:22:24,426 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-08-30 15:22:24,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91759 conditions, 45271 events. 31935/45271 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 2241. Compared 290766 event pairs, 28285 based on Foata normal form. 0/18736 useless extension candidates. Maximal degree in co-relation 73323. Up to 9057 conditions per place. [2023-08-30 15:22:24,660 INFO L137 encePairwiseOnDemand]: 582/594 looper letters, 218 selfloop transitions, 33 changer transitions 0/251 dead transitions. [2023-08-30 15:22:24,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 251 transitions, 1140 flow [2023-08-30 15:22:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:22:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:22:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1954 transitions. [2023-08-30 15:22:24,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46993746993746993 [2023-08-30 15:22:24,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1954 transitions. [2023-08-30 15:22:24,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1954 transitions. [2023-08-30 15:22:24,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:24,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1954 transitions. [2023-08-30 15:22:24,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:24,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 594.0) internal successors, (4752), 8 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:24,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 594.0) internal successors, (4752), 8 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:24,681 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 170 flow. Second operand 7 states and 1954 transitions. [2023-08-30 15:22:24,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 251 transitions, 1140 flow [2023-08-30 15:22:24,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 251 transitions, 1116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:22:24,687 INFO L231 Difference]: Finished difference. Result has 64 places, 83 transitions, 377 flow [2023-08-30 15:22:24,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=64, PETRI_TRANSITIONS=83} [2023-08-30 15:22:24,688 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-08-30 15:22:24,688 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 377 flow [2023-08-30 15:22:24,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.14285714285714) internal successors, (1702), 7 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:24,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:24,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:22:24,696 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 15:22:24,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:24,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:24,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:24,897 INFO L85 PathProgramCache]: Analyzing trace with hash 42884099, now seen corresponding path program 1 times [2023-08-30 15:22:24,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:24,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302594983] [2023-08-30 15:22:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:22:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302594983] [2023-08-30 15:22:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302594983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:22:24,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213645892] [2023-08-30 15:22:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:24,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:24,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:24,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 15:22:24,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 83 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:24,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:24,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 15:22:24,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:28,695 INFO L130 PetriNetUnfolder]: 31926/45259 cut-off events. [2023-08-30 15:22:28,695 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2023-08-30 15:22:28,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91762 conditions, 45259 events. 31926/45259 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 293593 event pairs, 28285 based on Foata normal form. 2/18737 useless extension candidates. Maximal degree in co-relation 55029. Up to 45259 conditions per place. [2023-08-30 15:22:28,892 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 15:22:28,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 438 flow [2023-08-30 15:22:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-08-30 15:22:28,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2023-08-30 15:22:28,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-08-30 15:22:28,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-08-30 15:22:28,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:28,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-08-30 15:22:28,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:28,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:28,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:28,902 INFO L175 Difference]: Start difference. First operand has 64 places, 83 transitions, 377 flow. Second operand 3 states and 780 transitions. [2023-08-30 15:22:28,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 438 flow [2023-08-30 15:22:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 408 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:28,906 INFO L231 Difference]: Finished difference. Result has 61 places, 71 transitions, 268 flow [2023-08-30 15:22:28,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=61, PETRI_TRANSITIONS=71} [2023-08-30 15:22:28,907 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 15:22:28,907 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 71 transitions, 268 flow [2023-08-30 15:22:28,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:28,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:28,908 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:22:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:22:28,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:28,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1738010142, now seen corresponding path program 2 times [2023-08-30 15:22:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:28,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700450490] [2023-08-30 15:22:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:29,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:29,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700450490] [2023-08-30 15:22:29,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700450490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:29,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203260508] [2023-08-30 15:22:29,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:22:29,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:29,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:29,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:22:29,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:22:29,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:22:29,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:22:29,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:22:29,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:22:29,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:22:29,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203260508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:29,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:22:29,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:22:29,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390542560] [2023-08-30 15:22:29,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:29,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:29,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:29,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:22:29,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 594 [2023-08-30 15:22:29,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 71 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:29,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:29,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 594 [2023-08-30 15:22:29,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:32,449 INFO L130 PetriNetUnfolder]: 31926/45258 cut-off events. [2023-08-30 15:22:32,449 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 15:22:32,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91740 conditions, 45258 events. 31926/45258 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 293545 event pairs, 28285 based on Foata normal form. 1/18737 useless extension candidates. Maximal degree in co-relation 91728. Up to 45253 conditions per place. [2023-08-30 15:22:32,614 INFO L137 encePairwiseOnDemand]: 591/594 looper letters, 64 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-30 15:22:32,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 398 flow [2023-08-30 15:22:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:32,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2023-08-30 15:22:32,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2023-08-30 15:22:32,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2023-08-30 15:22:32,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2023-08-30 15:22:32,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:32,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2023-08-30 15:22:32,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:32,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:32,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:32,624 INFO L175 Difference]: Start difference. First operand has 61 places, 71 transitions, 268 flow. Second operand 3 states and 786 transitions. [2023-08-30 15:22:32,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 398 flow [2023-08-30 15:22:32,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:32,626 INFO L231 Difference]: Finished difference. Result has 61 places, 70 transitions, 269 flow [2023-08-30 15:22:32,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=61, PETRI_TRANSITIONS=70} [2023-08-30 15:22:32,627 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 15:22:32,627 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 70 transitions, 269 flow [2023-08-30 15:22:32,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:32,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:32,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:32,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:22:32,833 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 15:22:32,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:32,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1514382284, now seen corresponding path program 1 times [2023-08-30 15:22:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:32,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757869255] [2023-08-30 15:22:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:32,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:32,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757869255] [2023-08-30 15:22:32,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757869255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:32,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:32,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:22:32,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617248986] [2023-08-30 15:22:32,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:32,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:22:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:22:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:22:32,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-08-30 15:22:32,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 70 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:33,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:33,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-08-30 15:22:33,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:36,097 INFO L130 PetriNetUnfolder]: 32586/46395 cut-off events. [2023-08-30 15:22:36,098 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-08-30 15:22:36,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94111 conditions, 46395 events. 32586/46395 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 302770 event pairs, 28900 based on Foata normal form. 450/20043 useless extension candidates. Maximal degree in co-relation 94098. Up to 45257 conditions per place. [2023-08-30 15:22:36,314 INFO L137 encePairwiseOnDemand]: 585/594 looper letters, 102 selfloop transitions, 3 changer transitions 1/106 dead transitions. [2023-08-30 15:22:36,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 628 flow [2023-08-30 15:22:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:22:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:22:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1030 transitions. [2023-08-30 15:22:36,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335016835016835 [2023-08-30 15:22:36,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1030 transitions. [2023-08-30 15:22:36,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1030 transitions. [2023-08-30 15:22:36,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:36,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1030 transitions. [2023-08-30 15:22:36,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:36,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:36,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:36,328 INFO L175 Difference]: Start difference. First operand has 61 places, 70 transitions, 269 flow. Second operand 4 states and 1030 transitions. [2023-08-30 15:22:36,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 628 flow [2023-08-30 15:22:36,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:22:36,331 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 276 flow [2023-08-30 15:22:36,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-08-30 15:22:36,332 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2023-08-30 15:22:36,332 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 276 flow [2023-08-30 15:22:36,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:36,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:36,333 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:22:36,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:22:36,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:36,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1536134945, now seen corresponding path program 1 times [2023-08-30 15:22:36,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:36,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768507355] [2023-08-30 15:22:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:36,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:36,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768507355] [2023-08-30 15:22:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768507355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834594427] [2023-08-30 15:22:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:36,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:36,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:36,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:22:36,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:22:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:36,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:22:36,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:36,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:22:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:36,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834594427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:22:36,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:22:36,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:22:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445174584] [2023-08-30 15:22:36,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:22:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:22:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:22:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:22:36,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 15:22:36,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 243.15384615384616) internal successors, (3161), 13 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:36,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:36,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 15:22:36,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:45,226 INFO L130 PetriNetUnfolder]: 71688/102063 cut-off events. [2023-08-30 15:22:45,227 INFO L131 PetriNetUnfolder]: For 6310/6310 co-relation queries the response was YES. [2023-08-30 15:22:45,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222513 conditions, 102063 events. 71688/102063 cut-off events. For 6310/6310 co-relation queries the response was YES. Maximal size of possible extension queue 3008. Compared 700841 event pairs, 63580 based on Foata normal form. 24/43106 useless extension candidates. Maximal degree in co-relation 222499. Up to 15533 conditions per place. [2023-08-30 15:22:45,771 INFO L137 encePairwiseOnDemand]: 586/594 looper letters, 469 selfloop transitions, 51 changer transitions 0/520 dead transitions. [2023-08-30 15:22:45,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 520 transitions, 2504 flow [2023-08-30 15:22:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:22:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:22:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3436 transitions. [2023-08-30 15:22:45,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820426487093154 [2023-08-30 15:22:45,783 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3436 transitions. [2023-08-30 15:22:45,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3436 transitions. [2023-08-30 15:22:45,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:45,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3436 transitions. [2023-08-30 15:22:45,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 286.3333333333333) internal successors, (3436), 12 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:45,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:45,806 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:45,806 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 276 flow. Second operand 12 states and 3436 transitions. [2023-08-30 15:22:45,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 520 transitions, 2504 flow [2023-08-30 15:22:45,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 520 transitions, 2498 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:45,816 INFO L231 Difference]: Finished difference. Result has 79 places, 100 transitions, 618 flow [2023-08-30 15:22:45,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=79, PETRI_TRANSITIONS=100} [2023-08-30 15:22:45,817 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2023-08-30 15:22:45,817 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 100 transitions, 618 flow [2023-08-30 15:22:45,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.15384615384616) internal successors, (3161), 13 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:45,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:45,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:45,825 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 15:22:46,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:46,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:46,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:46,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1338899493, now seen corresponding path program 1 times [2023-08-30 15:22:46,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:46,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736176354] [2023-08-30 15:22:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:46,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:46,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736176354] [2023-08-30 15:22:46,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736176354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:22:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530553320] [2023-08-30 15:22:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:46,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:46,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:22:46,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:22:46,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:22:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:46,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:22:46,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:22:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:22:46,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:22:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530553320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:46,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:22:46,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 15:22:46,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236955499] [2023-08-30 15:22:46,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:46,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:46,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:46,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:46,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:22:46,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-08-30 15:22:46,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 100 transitions, 618 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:46,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:46,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-08-30 15:22:46,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:52,760 INFO L130 PetriNetUnfolder]: 53978/77071 cut-off events. [2023-08-30 15:22:52,760 INFO L131 PetriNetUnfolder]: For 5535/5535 co-relation queries the response was YES. [2023-08-30 15:22:52,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163296 conditions, 77071 events. 53978/77071 cut-off events. For 5535/5535 co-relation queries the response was YES. Maximal size of possible extension queue 2472. Compared 515528 event pairs, 47256 based on Foata normal form. 0/34847 useless extension candidates. Maximal degree in co-relation 163275. Up to 77071 conditions per place. [2023-08-30 15:22:53,162 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-30 15:22:53,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 800 flow [2023-08-30 15:22:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:22:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:22:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-30 15:22:53,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44725028058361394 [2023-08-30 15:22:53,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-30 15:22:53,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-30 15:22:53,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:53,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-30 15:22:53,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:53,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:53,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:53,171 INFO L175 Difference]: Start difference. First operand has 79 places, 100 transitions, 618 flow. Second operand 3 states and 797 transitions. [2023-08-30 15:22:53,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 800 flow [2023-08-30 15:22:53,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 656 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 15:22:53,176 INFO L231 Difference]: Finished difference. Result has 73 places, 97 transitions, 464 flow [2023-08-30 15:22:53,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=73, PETRI_TRANSITIONS=97} [2023-08-30 15:22:53,177 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 15:22:53,178 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 97 transitions, 464 flow [2023-08-30 15:22:53,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:53,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:53,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:53,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:22:53,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:53,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:22:53,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1443791074, now seen corresponding path program 1 times [2023-08-30 15:22:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:53,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634749308] [2023-08-30 15:22:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:22:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:53,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634749308] [2023-08-30 15:22:53,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634749308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:53,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:53,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:22:53,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243069101] [2023-08-30 15:22:53,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:53,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:22:53,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:22:53,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:22:53,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-08-30 15:22:53,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 97 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:53,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:53,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-08-30 15:22:53,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:03,756 INFO L130 PetriNetUnfolder]: 90366/128859 cut-off events. [2023-08-30 15:23:03,756 INFO L131 PetriNetUnfolder]: For 6614/6614 co-relation queries the response was YES. [2023-08-30 15:23:04,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274083 conditions, 128859 events. 90366/128859 cut-off events. For 6614/6614 co-relation queries the response was YES. Maximal size of possible extension queue 4012. Compared 948209 event pairs, 46332 based on Foata normal form. 0/57950 useless extension candidates. Maximal degree in co-relation 274062. Up to 75598 conditions per place. [2023-08-30 15:23:04,685 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 129 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-30 15:23:04,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 131 transitions, 805 flow [2023-08-30 15:23:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-30 15:23:04,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657687991021324 [2023-08-30 15:23:04,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-30 15:23:04,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-30 15:23:04,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:04,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-30 15:23:04,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,693 INFO L175 Difference]: Start difference. First operand has 73 places, 97 transitions, 464 flow. Second operand 3 states and 830 transitions. [2023-08-30 15:23:04,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 131 transitions, 805 flow [2023-08-30 15:23:04,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:04,699 INFO L231 Difference]: Finished difference. Result has 75 places, 98 transitions, 477 flow [2023-08-30 15:23:04,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=75, PETRI_TRANSITIONS=98} [2023-08-30 15:23:04,700 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2023-08-30 15:23:04,700 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 98 transitions, 477 flow [2023-08-30 15:23:04,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:04,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:04,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:23:04,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:04,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1443791102, now seen corresponding path program 1 times [2023-08-30 15:23:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:04,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822966648] [2023-08-30 15:23:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:04,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:23:04,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:04,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822966648] [2023-08-30 15:23:04,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822966648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:04,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:04,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:23:04,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933688874] [2023-08-30 15:23:04,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:04,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:23:04,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:23:04,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:23:04,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 594 [2023-08-30 15:23:04,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 98 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:04,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:04,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 594 [2023-08-30 15:23:04,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:15,385 INFO L130 PetriNetUnfolder]: 96779/137054 cut-off events. [2023-08-30 15:23:15,385 INFO L131 PetriNetUnfolder]: For 24621/24621 co-relation queries the response was YES. [2023-08-30 15:23:15,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302937 conditions, 137054 events. 96779/137054 cut-off events. For 24621/24621 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 965282 event pairs, 27940 based on Foata normal form. 3212/66871 useless extension candidates. Maximal degree in co-relation 302915. Up to 111420 conditions per place. [2023-08-30 15:23:16,193 INFO L137 encePairwiseOnDemand]: 585/594 looper letters, 119 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2023-08-30 15:23:16,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 788 flow [2023-08-30 15:23:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-08-30 15:23:16,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590347923681257 [2023-08-30 15:23:16,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-08-30 15:23:16,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-08-30 15:23:16,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:16,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-08-30 15:23:16,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:16,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:16,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:16,201 INFO L175 Difference]: Start difference. First operand has 75 places, 98 transitions, 477 flow. Second operand 3 states and 818 transitions. [2023-08-30 15:23:16,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 788 flow [2023-08-30 15:23:16,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 124 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:16,244 INFO L231 Difference]: Finished difference. Result has 77 places, 102 transitions, 514 flow [2023-08-30 15:23:16,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=77, PETRI_TRANSITIONS=102} [2023-08-30 15:23:16,245 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2023-08-30 15:23:16,245 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 102 transitions, 514 flow [2023-08-30 15:23:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:16,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:16,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:16,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:23:16,247 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:16,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -237755367, now seen corresponding path program 1 times [2023-08-30 15:23:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:16,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147530838] [2023-08-30 15:23:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:16,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:16,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147530838] [2023-08-30 15:23:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147530838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:16,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:23:16,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122697917] [2023-08-30 15:23:16,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:16,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:23:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:16,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:23:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:23:16,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-08-30 15:23:16,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 102 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:16,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:16,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-08-30 15:23:16,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:26,320 INFO L130 PetriNetUnfolder]: 88876/125989 cut-off events. [2023-08-30 15:23:26,321 INFO L131 PetriNetUnfolder]: For 18217/18217 co-relation queries the response was YES. [2023-08-30 15:23:26,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309083 conditions, 125989 events. 88876/125989 cut-off events. For 18217/18217 co-relation queries the response was YES. Maximal size of possible extension queue 4101. Compared 896229 event pairs, 70614 based on Foata normal form. 100/58886 useless extension candidates. Maximal degree in co-relation 309059. Up to 124582 conditions per place. [2023-08-30 15:23:27,085 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 115 selfloop transitions, 13 changer transitions 0/128 dead transitions. [2023-08-30 15:23:27,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 128 transitions, 836 flow [2023-08-30 15:23:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:23:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:23:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2023-08-30 15:23:27,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43308080808080807 [2023-08-30 15:23:27,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2023-08-30 15:23:27,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2023-08-30 15:23:27,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:27,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2023-08-30 15:23:27,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:27,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:27,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:27,096 INFO L175 Difference]: Start difference. First operand has 77 places, 102 transitions, 514 flow. Second operand 4 states and 1029 transitions. [2023-08-30 15:23:27,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 128 transitions, 836 flow [2023-08-30 15:23:27,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 128 transitions, 831 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:27,124 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 567 flow [2023-08-30 15:23:27,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=567, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2023-08-30 15:23:27,126 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2023-08-30 15:23:27,126 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 567 flow [2023-08-30 15:23:27,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:27,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:27,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:27,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:23:27,127 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:27,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash -237755479, now seen corresponding path program 1 times [2023-08-30 15:23:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:27,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771064330] [2023-08-30 15:23:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:23:27,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:27,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771064330] [2023-08-30 15:23:27,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771064330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:23:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095362255] [2023-08-30 15:23:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:27,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:23:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:23:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:23:27,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 594 [2023-08-30 15:23:27,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 567 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:27,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:27,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 594 [2023-08-30 15:23:27,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:36,682 INFO L130 PetriNetUnfolder]: 81402/115339 cut-off events. [2023-08-30 15:23:36,682 INFO L131 PetriNetUnfolder]: For 20417/20417 co-relation queries the response was YES. [2023-08-30 15:23:37,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293433 conditions, 115339 events. 81402/115339 cut-off events. For 20417/20417 co-relation queries the response was YES. Maximal size of possible extension queue 3558. Compared 797174 event pairs, 27538 based on Foata normal form. 1428/56730 useless extension candidates. Maximal degree in co-relation 293407. Up to 109747 conditions per place. [2023-08-30 15:23:37,697 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 115 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2023-08-30 15:23:37,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 852 flow [2023-08-30 15:23:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:23:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:23:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-08-30 15:23:37,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2023-08-30 15:23:37,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-08-30 15:23:37,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-08-30 15:23:37,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:37,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-08-30 15:23:37,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:37,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:37,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:37,705 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 567 flow. Second operand 3 states and 804 transitions. [2023-08-30 15:23:37,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 852 flow [2023-08-30 15:23:37,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 838 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:37,884 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 594 flow [2023-08-30 15:23:37,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2023-08-30 15:23:37,885 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2023-08-30 15:23:37,885 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 594 flow [2023-08-30 15:23:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:37,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:37,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:37,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:23:37,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:37,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash -142394446, now seen corresponding path program 1 times [2023-08-30 15:23:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677818081] [2023-08-30 15:23:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:23:37,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677818081] [2023-08-30 15:23:37,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677818081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:37,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:23:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942027416] [2023-08-30 15:23:37,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:37,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:23:37,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:23:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:23:38,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-08-30 15:23:38,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:38,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:38,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-08-30 15:23:38,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:23:48,300 INFO L130 PetriNetUnfolder]: 83052/118355 cut-off events. [2023-08-30 15:23:48,300 INFO L131 PetriNetUnfolder]: For 30959/30959 co-relation queries the response was YES. [2023-08-30 15:23:48,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337193 conditions, 118355 events. 83052/118355 cut-off events. For 30959/30959 co-relation queries the response was YES. Maximal size of possible extension queue 3620. Compared 829266 event pairs, 54986 based on Foata normal form. 616/62910 useless extension candidates. Maximal degree in co-relation 337165. Up to 115327 conditions per place. [2023-08-30 15:23:49,101 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 106 selfloop transitions, 13 changer transitions 16/135 dead transitions. [2023-08-30 15:23:49,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1002 flow [2023-08-30 15:23:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:23:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:23:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2023-08-30 15:23:49,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297138047138047 [2023-08-30 15:23:49,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2023-08-30 15:23:49,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2023-08-30 15:23:49,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:23:49,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2023-08-30 15:23:49,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,110 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 594 flow. Second operand 4 states and 1021 transitions. [2023-08-30 15:23:49,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1002 flow [2023-08-30 15:23:49,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 135 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:23:49,241 INFO L231 Difference]: Finished difference. Result has 86 places, 107 transitions, 630 flow [2023-08-30 15:23:49,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=630, PETRI_PLACES=86, PETRI_TRANSITIONS=107} [2023-08-30 15:23:49,242 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2023-08-30 15:23:49,242 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 107 transitions, 630 flow [2023-08-30 15:23:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:23:49,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:23:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:23:49,243 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:23:49,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:23:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 331490807, now seen corresponding path program 1 times [2023-08-30 15:23:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:23:49,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289205164] [2023-08-30 15:23:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:23:49,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:23:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:23:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:23:49,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:23:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289205164] [2023-08-30 15:23:49,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289205164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:23:49,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:23:49,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:23:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405284294] [2023-08-30 15:23:49,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:23:49,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:23:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:23:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:23:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:23:49,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-08-30 15:23:49,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 107 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:23:49,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:23:49,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-08-30 15:23:49,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:00,478 INFO L130 PetriNetUnfolder]: 88398/127589 cut-off events. [2023-08-30 15:24:00,479 INFO L131 PetriNetUnfolder]: For 37135/37135 co-relation queries the response was YES. [2023-08-30 15:24:01,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376827 conditions, 127589 events. 88398/127589 cut-off events. For 37135/37135 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 934696 event pairs, 59254 based on Foata normal form. 0/67577 useless extension candidates. Maximal degree in co-relation 376798. Up to 111228 conditions per place. [2023-08-30 15:24:01,381 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 136 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2023-08-30 15:24:01,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 139 transitions, 1041 flow [2023-08-30 15:24:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:24:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:24:01,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-08-30 15:24:01,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46352413019079686 [2023-08-30 15:24:01,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-08-30 15:24:01,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-08-30 15:24:01,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:01,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-08-30 15:24:01,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:01,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:01,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:01,387 INFO L175 Difference]: Start difference. First operand has 86 places, 107 transitions, 630 flow. Second operand 3 states and 826 transitions. [2023-08-30 15:24:01,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 139 transitions, 1041 flow [2023-08-30 15:24:01,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 139 transitions, 1001 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 15:24:01,545 INFO L231 Difference]: Finished difference. Result has 86 places, 106 transitions, 590 flow [2023-08-30 15:24:01,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=86, PETRI_TRANSITIONS=106} [2023-08-30 15:24:01,546 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2023-08-30 15:24:01,546 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 106 transitions, 590 flow [2023-08-30 15:24:01,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:01,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:01,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:01,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:24:01,547 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 15:24:01,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash 331490912, now seen corresponding path program 1 times [2023-08-30 15:24:01,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:01,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380336773] [2023-08-30 15:24:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 15:24:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380336773] [2023-08-30 15:24:01,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380336773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:01,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:01,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:24:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241196553] [2023-08-30 15:24:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:01,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:01,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:24:01,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 594 [2023-08-30 15:24:01,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:01,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:01,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 594 [2023-08-30 15:24:01,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand