/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-deagle/floating_read-10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:05:15,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:05:15,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:05:15,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:05:15,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:05:15,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:05:15,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:05:15,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:05:15,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:05:15,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:05:15,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:05:15,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:05:15,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:05:15,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:05:15,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:05:15,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:05:15,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:05:15,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:05:15,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:05:15,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:05:15,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:05:15,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:05:15,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:05:15,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:05:15,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:05:15,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:05:15,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:05:15,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:05:15,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:05:15,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:05:15,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:05:15,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:05:15,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:05:15,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:05:15,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:05:15,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:05:15,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:05:15,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:05:15,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:05:15,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:05:15,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:05:15,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 12:05:15,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:05:15,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:05:15,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:05:15,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:05:15,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:05:15,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:05:15,137 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:05:15,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:05:15,137 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:05:15,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:05:15,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:05:15,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:05:15,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:05:15,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:05:15,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:05:15,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:05:15,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:05:15,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:05:15,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:05:15,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:05:15,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:05:15,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:05:15,140 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:05:15,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:05:15,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:05:15,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:05:15,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:05:15,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:05:15,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:05:15,401 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:05:15,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/floating_read-10.i [2022-09-16 12:05:15,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16405443/9354d16609424c8ca97c1c61549fe7a6/FLAG711792252 [2022-09-16 12:05:15,909 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:05:15,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-10.i [2022-09-16 12:05:15,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16405443/9354d16609424c8ca97c1c61549fe7a6/FLAG711792252 [2022-09-16 12:05:16,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16405443/9354d16609424c8ca97c1c61549fe7a6 [2022-09-16 12:05:16,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:05:16,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:05:16,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:05:16,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:05:16,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:05:16,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d6bdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16, skipping insertion in model container [2022-09-16 12:05:16,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:05:16,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:05:16,651 WARN L1550 CHandler]: Possible shadowing of function thread [2022-09-16 12:05:16,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-10.i[31197,31210] [2022-09-16 12:05:16,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:05:16,674 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:05:16,715 WARN L1550 CHandler]: Possible shadowing of function thread [2022-09-16 12:05:16,718 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-10.i[31197,31210] [2022-09-16 12:05:16,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:05:16,751 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:05:16,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16 WrapperNode [2022-09-16 12:05:16,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:05:16,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:05:16,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:05:16,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:05:16,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,810 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-09-16 12:05:16,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:05:16,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:05:16,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:05:16,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:05:16,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:05:16,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:05:16,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:05:16,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:05:16,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (1/1) ... [2022-09-16 12:05:16,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:05:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:16,901 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) [2022-09-16 12:05:16,910 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 [2022-09-16 12:05:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:05:16,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 12:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-09-16 12:05:16,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-09-16 12:05:16,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 12:05:16,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:05:16,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:05:16,944 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 12:05:17,082 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:05:17,097 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:05:17,229 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:05:17,235 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:05:17,235 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 12:05:17,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:05:17 BoogieIcfgContainer [2022-09-16 12:05:17,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:05:17,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:05:17,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:05:17,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:05:17,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:05:16" (1/3) ... [2022-09-16 12:05:17,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d295cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:05:17, skipping insertion in model container [2022-09-16 12:05:17,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:05:16" (2/3) ... [2022-09-16 12:05:17,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d295cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:05:17, skipping insertion in model container [2022-09-16 12:05:17,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:05:17" (3/3) ... [2022-09-16 12:05:17,244 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-10.i [2022-09-16 12:05:17,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:05:17,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 12:05:17,269 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:05:17,304 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-16 12:05:17,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 66 transitions, 140 flow [2022-09-16 12:05:17,368 INFO L130 PetriNetUnfolder]: 7/87 cut-off events. [2022-09-16 12:05:17,369 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 12:05:17,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 87 events. 7/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 41. Up to 4 conditions per place. [2022-09-16 12:05:17,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 66 transitions, 140 flow [2022-09-16 12:05:17,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 118 flow [2022-09-16 12:05:17,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:17,391 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:17,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:17,404 INFO L130 PetriNetUnfolder]: 2/42 cut-off events. [2022-09-16 12:05:17,404 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:17,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:17,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:17,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:17,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash 90008394, now seen corresponding path program 1 times [2022-09-16 12:05:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:17,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165609985] [2022-09-16 12:05:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:17,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165609985] [2022-09-16 12:05:17,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165609985] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:17,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:17,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:17,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935847975] [2022-09-16 12:05:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:17,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:17,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:17,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:17,740 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 66 [2022-09-16 12:05:17,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:17,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:17,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 66 [2022-09-16 12:05:17,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:17,832 INFO L130 PetriNetUnfolder]: 0/54 cut-off events. [2022-09-16 12:05:17,832 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 12:05:17,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 54 events. 0/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-09-16 12:05:17,833 INFO L137 encePairwiseOnDemand]: 57/66 looper letters, 10 selfloop transitions, 4 changer transitions 1/52 dead transitions. [2022-09-16 12:05:17,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 140 flow [2022-09-16 12:05:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 260 transitions. [2022-09-16 12:05:17,849 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2022-09-16 12:05:17,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 260 transitions. [2022-09-16 12:05:17,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 260 transitions. [2022-09-16 12:05:17,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:17,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 260 transitions. [2022-09-16 12:05:17,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:17,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:17,872 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:17,874 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 118 flow. Second operand 5 states and 260 transitions. [2022-09-16 12:05:17,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 140 flow [2022-09-16 12:05:17,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:17,886 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 118 flow [2022-09-16 12:05:17,888 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2022-09-16 12:05:17,894 INFO L287 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2022-09-16 12:05:17,894 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 118 flow [2022-09-16 12:05:17,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:17,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:17,895 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:05:17,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:17,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1159646497, now seen corresponding path program 1 times [2022-09-16 12:05:17,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:17,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253169836] [2022-09-16 12:05:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:17,949 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:18,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:18,022 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:18,024 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:18,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:18,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:18,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:18,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:18,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 12:05:18,031 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-16 12:05:18,034 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:18,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-09-16 12:05:18,051 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 12:05:18,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 73 transitions, 164 flow [2022-09-16 12:05:18,097 INFO L130 PetriNetUnfolder]: 13/152 cut-off events. [2022-09-16 12:05:18,097 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 12:05:18,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 152 events. 13/152 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 264 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2022-09-16 12:05:18,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 73 transitions, 164 flow [2022-09-16 12:05:18,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 65 transitions, 148 flow [2022-09-16 12:05:18,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:18,102 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:18,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:18,117 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-09-16 12:05:18,117 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:18,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:18,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:18,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash -307334824, now seen corresponding path program 1 times [2022-09-16 12:05:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315964410] [2022-09-16 12:05:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:18,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:18,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315964410] [2022-09-16 12:05:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315964410] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:18,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:18,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40209530] [2022-09-16 12:05:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:18,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:18,203 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 73 [2022-09-16 12:05:18,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:18,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 73 [2022-09-16 12:05:18,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:18,287 INFO L130 PetriNetUnfolder]: 2/105 cut-off events. [2022-09-16 12:05:18,288 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-09-16 12:05:18,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 105 events. 2/105 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 139 event pairs, 0 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 78. Up to 21 conditions per place. [2022-09-16 12:05:18,290 INFO L137 encePairwiseOnDemand]: 64/73 looper letters, 19 selfloop transitions, 4 changer transitions 1/69 dead transitions. [2022-09-16 12:05:18,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 202 flow [2022-09-16 12:05:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2022-09-16 12:05:18,297 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8054794520547945 [2022-09-16 12:05:18,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 294 transitions. [2022-09-16 12:05:18,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 294 transitions. [2022-09-16 12:05:18,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:18,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 294 transitions. [2022-09-16 12:05:18,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,300 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,300 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 148 flow. Second operand 5 states and 294 transitions. [2022-09-16 12:05:18,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 202 flow [2022-09-16 12:05:18,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:18,302 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 172 flow [2022-09-16 12:05:18,303 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2022-09-16 12:05:18,303 INFO L287 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2022-09-16 12:05:18,304 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 172 flow [2022-09-16 12:05:18,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:18,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:18,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 12:05:18,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:18,305 INFO L85 PathProgramCache]: Analyzing trace with hash 284383053, now seen corresponding path program 1 times [2022-09-16 12:05:18,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:18,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726376554] [2022-09-16 12:05:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:18,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:18,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:18,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726376554] [2022-09-16 12:05:18,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726376554] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:18,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:18,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:18,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423885004] [2022-09-16 12:05:18,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:18,383 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 73 [2022-09-16 12:05:18,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:18,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 73 [2022-09-16 12:05:18,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:18,429 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2022-09-16 12:05:18,430 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-09-16 12:05:18,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 102 events. 2/102 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 102. Up to 10 conditions per place. [2022-09-16 12:05:18,430 INFO L137 encePairwiseOnDemand]: 67/73 looper letters, 11 selfloop transitions, 8 changer transitions 0/64 dead transitions. [2022-09-16 12:05:18,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 64 transitions, 208 flow [2022-09-16 12:05:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 282 transitions. [2022-09-16 12:05:18,432 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7726027397260274 [2022-09-16 12:05:18,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 282 transitions. [2022-09-16 12:05:18,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 282 transitions. [2022-09-16 12:05:18,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:18,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 282 transitions. [2022-09-16 12:05:18,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.4) internal successors, (282), 5 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,437 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 172 flow. Second operand 5 states and 282 transitions. [2022-09-16 12:05:18,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 64 transitions, 208 flow [2022-09-16 12:05:18,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:18,442 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 190 flow [2022-09-16 12:05:18,442 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2022-09-16 12:05:18,444 INFO L287 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2022-09-16 12:05:18,444 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 190 flow [2022-09-16 12:05:18,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:18,446 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:18,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 12:05:18,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 225940277, now seen corresponding path program 1 times [2022-09-16 12:05:18,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404128219] [2022-09-16 12:05:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:18,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:18,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404128219] [2022-09-16 12:05:18,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404128219] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:18,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022725628] [2022-09-16 12:05:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:18,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:18,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:18,527 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) [2022-09-16 12:05:18,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 12:05:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:18,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:18,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:18,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:18,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022725628] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:18,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:18,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970566949] [2022-09-16 12:05:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:18,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:18,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:18,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:18,742 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 73 [2022-09-16 12:05:18,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:18,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 73 [2022-09-16 12:05:18,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:18,833 INFO L130 PetriNetUnfolder]: 2/101 cut-off events. [2022-09-16 12:05:18,833 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-09-16 12:05:18,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 101 events. 2/101 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 117 event pairs, 0 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 92. Up to 13 conditions per place. [2022-09-16 12:05:18,834 INFO L137 encePairwiseOnDemand]: 68/73 looper letters, 15 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2022-09-16 12:05:18,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 234 flow [2022-09-16 12:05:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:18,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:18,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 393 transitions. [2022-09-16 12:05:18,836 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7690802348336595 [2022-09-16 12:05:18,836 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 393 transitions. [2022-09-16 12:05:18,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 393 transitions. [2022-09-16 12:05:18,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:18,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 393 transitions. [2022-09-16 12:05:18,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 56.142857142857146) internal successors, (393), 7 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 73.0) internal successors, (584), 8 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,839 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 190 flow. Second operand 7 states and 393 transitions. [2022-09-16 12:05:18,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 234 flow [2022-09-16 12:05:18,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:18,841 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 186 flow [2022-09-16 12:05:18,842 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2022-09-16 12:05:18,842 INFO L287 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2022-09-16 12:05:18,843 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 186 flow [2022-09-16 12:05:18,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:18,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:18,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:18,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 12:05:19,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:19,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1429842396, now seen corresponding path program 1 times [2022-09-16 12:05:19,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:19,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484750739] [2022-09-16 12:05:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:19,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:19,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:19,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484750739] [2022-09-16 12:05:19,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484750739] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345449650] [2022-09-16 12:05:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:19,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:19,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:19,148 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) [2022-09-16 12:05:19,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 12:05:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:19,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:19,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:19,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:19,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345449650] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:19,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:19,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:19,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564365795] [2022-09-16 12:05:19,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:19,339 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 73 [2022-09-16 12:05:19,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 186 flow. Second operand has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:19,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 73 [2022-09-16 12:05:19,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:19,402 INFO L130 PetriNetUnfolder]: 0/59 cut-off events. [2022-09-16 12:05:19,402 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-09-16 12:05:19,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 59 events. 0/59 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-09-16 12:05:19,403 INFO L137 encePairwiseOnDemand]: 68/73 looper letters, 13 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2022-09-16 12:05:19,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 53 transitions, 200 flow [2022-09-16 12:05:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 499 transitions. [2022-09-16 12:05:19,406 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7595129375951294 [2022-09-16 12:05:19,406 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 499 transitions. [2022-09-16 12:05:19,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 499 transitions. [2022-09-16 12:05:19,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:19,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 499 transitions. [2022-09-16 12:05:19,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 55.44444444444444) internal successors, (499), 9 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 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) [2022-09-16 12:05:19,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 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) [2022-09-16 12:05:19,409 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 186 flow. Second operand 9 states and 499 transitions. [2022-09-16 12:05:19,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 53 transitions, 200 flow [2022-09-16 12:05:19,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 183 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-09-16 12:05:19,414 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 145 flow [2022-09-16 12:05:19,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=145, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2022-09-16 12:05:19,417 INFO L287 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2022-09-16 12:05:19,417 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 145 flow [2022-09-16 12:05:19,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.0) internal successors, (560), 10 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:19,418 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:19,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:19,649 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,SelfDestructingSolverStorable5 [2022-09-16 12:05:19,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1781391463, now seen corresponding path program 1 times [2022-09-16 12:05:19,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:19,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336468105] [2022-09-16 12:05:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:19,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:19,675 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:19,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:19,713 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:19,714 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:19,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:19,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:19,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:19,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:19,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 12:05:19,716 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 12:05:19,717 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:19,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-09-16 12:05:19,732 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 12:05:19,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 190 flow [2022-09-16 12:05:19,765 INFO L130 PetriNetUnfolder]: 24/258 cut-off events. [2022-09-16 12:05:19,766 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-09-16 12:05:19,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 258 events. 24/258 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 614 event pairs, 1 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 160. Up to 16 conditions per place. [2022-09-16 12:05:19,766 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 190 flow [2022-09-16 12:05:19,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 174 flow [2022-09-16 12:05:19,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:19,769 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:19,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:19,772 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-09-16 12:05:19,772 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:19,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:19,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:19,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:19,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:19,773 INFO L85 PathProgramCache]: Analyzing trace with hash -272540883, now seen corresponding path program 1 times [2022-09-16 12:05:19,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:19,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403462743] [2022-09-16 12:05:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:19,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:19,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403462743] [2022-09-16 12:05:19,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403462743] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:19,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:19,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:19,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728262165] [2022-09-16 12:05:19,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:19,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:19,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:19,805 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 80 [2022-09-16 12:05:19,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:19,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 80 [2022-09-16 12:05:19,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:19,856 INFO L130 PetriNetUnfolder]: 7/176 cut-off events. [2022-09-16 12:05:19,856 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-09-16 12:05:19,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 176 events. 7/176 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 363 event pairs, 1 based on Foata normal form. 3/155 useless extension candidates. Maximal degree in co-relation 146. Up to 40 conditions per place. [2022-09-16 12:05:19,858 INFO L137 encePairwiseOnDemand]: 71/80 looper letters, 21 selfloop transitions, 4 changer transitions 1/76 dead transitions. [2022-09-16 12:05:19,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 232 flow [2022-09-16 12:05:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 321 transitions. [2022-09-16 12:05:19,859 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8025 [2022-09-16 12:05:19,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 321 transitions. [2022-09-16 12:05:19,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 321 transitions. [2022-09-16 12:05:19,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:19,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 321 transitions. [2022-09-16 12:05:19,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.2) internal successors, (321), 5 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,861 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,862 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 174 flow. Second operand 5 states and 321 transitions. [2022-09-16 12:05:19,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 232 flow [2022-09-16 12:05:19,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 232 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:19,864 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 198 flow [2022-09-16 12:05:19,864 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2022-09-16 12:05:19,865 INFO L287 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2022-09-16 12:05:19,865 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 198 flow [2022-09-16 12:05:19,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:19,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:19,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 12:05:19,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1659788071, now seen corresponding path program 1 times [2022-09-16 12:05:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:19,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418206114] [2022-09-16 12:05:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:19,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:19,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418206114] [2022-09-16 12:05:19,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418206114] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:19,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:19,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495340999] [2022-09-16 12:05:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:19,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:19,895 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 80 [2022-09-16 12:05:19,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:19,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 80 [2022-09-16 12:05:19,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:19,936 INFO L130 PetriNetUnfolder]: 7/171 cut-off events. [2022-09-16 12:05:19,936 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-09-16 12:05:19,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 171 events. 7/171 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 332 event pairs, 1 based on Foata normal form. 2/159 useless extension candidates. Maximal degree in co-relation 207. Up to 20 conditions per place. [2022-09-16 12:05:19,937 INFO L137 encePairwiseOnDemand]: 74/80 looper letters, 13 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2022-09-16 12:05:19,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 238 flow [2022-09-16 12:05:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 309 transitions. [2022-09-16 12:05:19,939 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7725 [2022-09-16 12:05:19,939 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 309 transitions. [2022-09-16 12:05:19,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 309 transitions. [2022-09-16 12:05:19,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:19,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 309 transitions. [2022-09-16 12:05:19,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 80.0) internal successors, (480), 6 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,941 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 198 flow. Second operand 5 states and 309 transitions. [2022-09-16 12:05:19,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 238 flow [2022-09-16 12:05:19,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 71 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:19,944 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 216 flow [2022-09-16 12:05:19,944 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2022-09-16 12:05:19,944 INFO L287 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2022-09-16 12:05:19,944 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 216 flow [2022-09-16 12:05:19,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:19,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:19,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:19,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 12:05:19,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:19,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash -86177045, now seen corresponding path program 1 times [2022-09-16 12:05:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:19,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596671041] [2022-09-16 12:05:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:19,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:19,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596671041] [2022-09-16 12:05:19,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596671041] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:19,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818203249] [2022-09-16 12:05:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:19,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:19,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:19,987 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) [2022-09-16 12:05:20,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 12:05:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:20,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:20,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:20,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:20,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818203249] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:20,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:20,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597407416] [2022-09-16 12:05:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:20,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:20,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:20,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 80 [2022-09-16 12:05:20,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:20,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 80 [2022-09-16 12:05:20,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:20,195 INFO L130 PetriNetUnfolder]: 7/169 cut-off events. [2022-09-16 12:05:20,196 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-09-16 12:05:20,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 169 events. 7/169 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 321 event pairs, 1 based on Foata normal form. 2/157 useless extension candidates. Maximal degree in co-relation 164. Up to 26 conditions per place. [2022-09-16 12:05:20,197 INFO L137 encePairwiseOnDemand]: 75/80 looper letters, 17 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2022-09-16 12:05:20,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 73 transitions, 264 flow [2022-09-16 12:05:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 430 transitions. [2022-09-16 12:05:20,199 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2022-09-16 12:05:20,199 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 430 transitions. [2022-09-16 12:05:20,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 430 transitions. [2022-09-16 12:05:20,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:20,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 430 transitions. [2022-09-16 12:05:20,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 80.0) internal successors, (640), 8 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,202 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 80.0) internal successors, (640), 8 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,202 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 216 flow. Second operand 7 states and 430 transitions. [2022-09-16 12:05:20,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 73 transitions, 264 flow [2022-09-16 12:05:20,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 73 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:20,204 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 212 flow [2022-09-16 12:05:20,204 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=7, PETRI_FLOW=212, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2022-09-16 12:05:20,205 INFO L287 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2022-09-16 12:05:20,205 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 212 flow [2022-09-16 12:05:20,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:20,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:20,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:20,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:20,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -706922565, now seen corresponding path program 1 times [2022-09-16 12:05:20,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:20,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775805096] [2022-09-16 12:05:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:20,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:20,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775805096] [2022-09-16 12:05:20,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775805096] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:20,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134668826] [2022-09-16 12:05:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:20,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:20,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:20,502 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) [2022-09-16 12:05:20,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 12:05:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:20,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:20,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:20,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:20,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134668826] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:20,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:20,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174581923] [2022-09-16 12:05:20,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:20,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:20,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:20,624 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 80 [2022-09-16 12:05:20,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 212 flow. Second operand has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:20,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 80 [2022-09-16 12:05:20,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:20,701 INFO L130 PetriNetUnfolder]: 5/163 cut-off events. [2022-09-16 12:05:20,701 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-09-16 12:05:20,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 163 events. 5/163 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 231 event pairs, 5 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 152. Up to 17 conditions per place. [2022-09-16 12:05:20,703 INFO L137 encePairwiseOnDemand]: 74/80 looper letters, 22 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2022-09-16 12:05:20,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 81 transitions, 312 flow [2022-09-16 12:05:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 555 transitions. [2022-09-16 12:05:20,705 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7708333333333334 [2022-09-16 12:05:20,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 555 transitions. [2022-09-16 12:05:20,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 555 transitions. [2022-09-16 12:05:20,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:20,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 555 transitions. [2022-09-16 12:05:20,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.666666666666664) internal successors, (555), 9 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,708 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,709 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 212 flow. Second operand 9 states and 555 transitions. [2022-09-16 12:05:20,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 81 transitions, 312 flow [2022-09-16 12:05:20,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 81 transitions, 299 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:05:20,711 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 259 flow [2022-09-16 12:05:20,711 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=259, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2022-09-16 12:05:20,712 INFO L287 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2022-09-16 12:05:20,712 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 259 flow [2022-09-16 12:05:20,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:20,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:20,713 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:20,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:20,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:20,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:20,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash -373827647, now seen corresponding path program 1 times [2022-09-16 12:05:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:20,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809223650] [2022-09-16 12:05:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:20,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:20,968 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:20,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:20,995 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:20,996 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:20,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:20,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:20,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:20,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:20,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 12:05:20,996 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 12:05:20,997 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:20,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-09-16 12:05:21,009 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 12:05:21,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 218 flow [2022-09-16 12:05:21,045 INFO L130 PetriNetUnfolder]: 47/448 cut-off events. [2022-09-16 12:05:21,045 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-09-16 12:05:21,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 448 events. 47/448 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1460 event pairs, 6 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 278. Up to 32 conditions per place. [2022-09-16 12:05:21,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 218 flow [2022-09-16 12:05:21,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 202 flow [2022-09-16 12:05:21,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:21,050 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:21,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:21,053 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-09-16 12:05:21,053 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:21,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:21,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:21,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:21,054 INFO L85 PathProgramCache]: Analyzing trace with hash 194390217, now seen corresponding path program 1 times [2022-09-16 12:05:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:21,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392666070] [2022-09-16 12:05:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:21,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:21,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392666070] [2022-09-16 12:05:21,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392666070] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:21,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:21,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545308624] [2022-09-16 12:05:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:21,104 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 87 [2022-09-16 12:05:21,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:21,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 87 [2022-09-16 12:05:21,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:21,165 INFO L130 PetriNetUnfolder]: 20/299 cut-off events. [2022-09-16 12:05:21,166 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-09-16 12:05:21,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 299 events. 20/299 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 855 event pairs, 6 based on Foata normal form. 4/259 useless extension candidates. Maximal degree in co-relation 250. Up to 71 conditions per place. [2022-09-16 12:05:21,168 INFO L137 encePairwiseOnDemand]: 78/87 looper letters, 23 selfloop transitions, 4 changer transitions 1/83 dead transitions. [2022-09-16 12:05:21,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 264 flow [2022-09-16 12:05:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 348 transitions. [2022-09-16 12:05:21,169 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-09-16 12:05:21,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 348 transitions. [2022-09-16 12:05:21,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 348 transitions. [2022-09-16 12:05:21,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:21,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 348 transitions. [2022-09-16 12:05:21,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,172 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,172 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 202 flow. Second operand 5 states and 348 transitions. [2022-09-16 12:05:21,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 264 flow [2022-09-16 12:05:21,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:21,174 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 226 flow [2022-09-16 12:05:21,174 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2022-09-16 12:05:21,174 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 6 predicate places. [2022-09-16 12:05:21,174 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 226 flow [2022-09-16 12:05:21,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:21,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:21,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 12:05:21,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash 630328712, now seen corresponding path program 1 times [2022-09-16 12:05:21,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:21,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974449322] [2022-09-16 12:05:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:21,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:21,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974449322] [2022-09-16 12:05:21,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974449322] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:21,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:21,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306850612] [2022-09-16 12:05:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:21,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:21,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:21,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:21,203 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 87 [2022-09-16 12:05:21,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:21,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 87 [2022-09-16 12:05:21,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:21,258 INFO L130 PetriNetUnfolder]: 20/292 cut-off events. [2022-09-16 12:05:21,258 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-09-16 12:05:21,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 292 events. 20/292 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 786 event pairs, 6 based on Foata normal form. 3/265 useless extension candidates. Maximal degree in co-relation 389. Up to 42 conditions per place. [2022-09-16 12:05:21,260 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 15 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2022-09-16 12:05:21,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 78 transitions, 270 flow [2022-09-16 12:05:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2022-09-16 12:05:21,262 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7724137931034483 [2022-09-16 12:05:21,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 336 transitions. [2022-09-16 12:05:21,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 336 transitions. [2022-09-16 12:05:21,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:21,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 336 transitions. [2022-09-16 12:05:21,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,264 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,264 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 226 flow. Second operand 5 states and 336 transitions. [2022-09-16 12:05:21,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 78 transitions, 270 flow [2022-09-16 12:05:21,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 78 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:21,266 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 244 flow [2022-09-16 12:05:21,267 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2022-09-16 12:05:21,267 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2022-09-16 12:05:21,267 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 244 flow [2022-09-16 12:05:21,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:21,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:21,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 12:05:21,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1934646015, now seen corresponding path program 1 times [2022-09-16 12:05:21,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:21,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140325017] [2022-09-16 12:05:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:21,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:21,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:21,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140325017] [2022-09-16 12:05:21,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140325017] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:21,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174175092] [2022-09-16 12:05:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:21,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:21,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:21,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:21,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 12:05:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:21,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:21,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:21,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:21,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174175092] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:21,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:21,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:21,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895391629] [2022-09-16 12:05:21,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:21,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:21,466 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 87 [2022-09-16 12:05:21,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:21,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 87 [2022-09-16 12:05:21,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:21,550 INFO L130 PetriNetUnfolder]: 20/289 cut-off events. [2022-09-16 12:05:21,551 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-09-16 12:05:21,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 289 events. 20/289 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 803 event pairs, 6 based on Foata normal form. 3/262 useless extension candidates. Maximal degree in co-relation 272. Up to 51 conditions per place. [2022-09-16 12:05:21,553 INFO L137 encePairwiseOnDemand]: 82/87 looper letters, 19 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2022-09-16 12:05:21,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 80 transitions, 296 flow [2022-09-16 12:05:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 467 transitions. [2022-09-16 12:05:21,555 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7668308702791461 [2022-09-16 12:05:21,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 467 transitions. [2022-09-16 12:05:21,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 467 transitions. [2022-09-16 12:05:21,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:21,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 467 transitions. [2022-09-16 12:05:21,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,559 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 244 flow. Second operand 7 states and 467 transitions. [2022-09-16 12:05:21,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 80 transitions, 296 flow [2022-09-16 12:05:21,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 80 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:21,562 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 240 flow [2022-09-16 12:05:21,562 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2022-09-16 12:05:21,563 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 10 predicate places. [2022-09-16 12:05:21,563 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 240 flow [2022-09-16 12:05:21,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:21,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:21,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:21,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 12:05:21,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash -423930645, now seen corresponding path program 1 times [2022-09-16 12:05:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:21,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896558937] [2022-09-16 12:05:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:21,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:21,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:21,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896558937] [2022-09-16 12:05:21,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896558937] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:21,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927321117] [2022-09-16 12:05:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:21,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:21,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:21,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:21,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 12:05:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:21,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:21,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:21,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:21,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927321117] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:21,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:21,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:21,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800175988] [2022-09-16 12:05:21,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:21,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:21,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:21,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:21,986 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 87 [2022-09-16 12:05:21,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 240 flow. Second operand has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:21,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:21,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 87 [2022-09-16 12:05:21,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:22,083 INFO L130 PetriNetUnfolder]: 18/283 cut-off events. [2022-09-16 12:05:22,083 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2022-09-16 12:05:22,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 283 events. 18/283 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 833 event pairs, 10 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 259. Up to 40 conditions per place. [2022-09-16 12:05:22,086 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 24 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2022-09-16 12:05:22,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 344 flow [2022-09-16 12:05:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 602 transitions. [2022-09-16 12:05:22,088 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.768837803320562 [2022-09-16 12:05:22,088 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 602 transitions. [2022-09-16 12:05:22,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 602 transitions. [2022-09-16 12:05:22,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:22,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 602 transitions. [2022-09-16 12:05:22,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.88888888888889) internal successors, (602), 9 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,092 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,092 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 240 flow. Second operand 9 states and 602 transitions. [2022-09-16 12:05:22,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 344 flow [2022-09-16 12:05:22,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 331 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:05:22,095 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 287 flow [2022-09-16 12:05:22,095 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=287, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2022-09-16 12:05:22,096 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 17 predicate places. [2022-09-16 12:05:22,096 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 287 flow [2022-09-16 12:05:22,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:22,097 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:22,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 12:05:22,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -730593204, now seen corresponding path program 1 times [2022-09-16 12:05:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:22,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031689239] [2022-09-16 12:05:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:05:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:22,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031689239] [2022-09-16 12:05:22,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031689239] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:22,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:22,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:22,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399353902] [2022-09-16 12:05:22,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:22,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:22,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 87 [2022-09-16 12:05:22,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:22,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 87 [2022-09-16 12:05:22,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:22,456 INFO L130 PetriNetUnfolder]: 20/298 cut-off events. [2022-09-16 12:05:22,456 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-09-16 12:05:22,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 298 events. 20/298 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 953 event pairs, 2 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 336. Up to 148 conditions per place. [2022-09-16 12:05:22,458 INFO L137 encePairwiseOnDemand]: 81/87 looper letters, 26 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2022-09-16 12:05:22,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 92 transitions, 381 flow [2022-09-16 12:05:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 347 transitions. [2022-09-16 12:05:22,460 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7977011494252874 [2022-09-16 12:05:22,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 347 transitions. [2022-09-16 12:05:22,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 347 transitions. [2022-09-16 12:05:22,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:22,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 347 transitions. [2022-09-16 12:05:22,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,463 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 287 flow. Second operand 5 states and 347 transitions. [2022-09-16 12:05:22,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 92 transitions, 381 flow [2022-09-16 12:05:22,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 92 transitions, 367 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 12:05:22,466 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 303 flow [2022-09-16 12:05:22,466 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2022-09-16 12:05:22,467 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2022-09-16 12:05:22,467 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 303 flow [2022-09-16 12:05:22,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:22,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:22,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 12:05:22,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash 98746669, now seen corresponding path program 1 times [2022-09-16 12:05:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:22,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121678422] [2022-09-16 12:05:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:22,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:22,490 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:22,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:22,525 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:22,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:22,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:22,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:22,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:22,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:22,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 12:05:22,526 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-09-16 12:05:22,526 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:22,526 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-09-16 12:05:22,548 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-09-16 12:05:22,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 94 transitions, 248 flow [2022-09-16 12:05:22,621 INFO L130 PetriNetUnfolder]: 98/810 cut-off events. [2022-09-16 12:05:22,621 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-09-16 12:05:22,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 810 events. 98/810 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3581 event pairs, 23 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 493. Up to 80 conditions per place. [2022-09-16 12:05:22,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 94 transitions, 248 flow [2022-09-16 12:05:22,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 86 transitions, 232 flow [2022-09-16 12:05:22,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:22,627 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:22,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:22,630 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-09-16 12:05:22,630 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:22,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:22,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:22,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1093458476, now seen corresponding path program 1 times [2022-09-16 12:05:22,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:22,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067682120] [2022-09-16 12:05:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:22,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067682120] [2022-09-16 12:05:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067682120] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:22,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:22,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535548702] [2022-09-16 12:05:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:22,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:22,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:22,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 94 [2022-09-16 12:05:22,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:22,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 94 [2022-09-16 12:05:22,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:22,747 INFO L130 PetriNetUnfolder]: 53/530 cut-off events. [2022-09-16 12:05:22,747 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES. [2022-09-16 12:05:22,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 530 events. 53/530 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2057 event pairs, 23 based on Foata normal form. 5/455 useless extension candidates. Maximal degree in co-relation 431. Up to 130 conditions per place. [2022-09-16 12:05:22,752 INFO L137 encePairwiseOnDemand]: 85/94 looper letters, 25 selfloop transitions, 4 changer transitions 1/90 dead transitions. [2022-09-16 12:05:22,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 298 flow [2022-09-16 12:05:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2022-09-16 12:05:22,754 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7978723404255319 [2022-09-16 12:05:22,754 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2022-09-16 12:05:22,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2022-09-16 12:05:22,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:22,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2022-09-16 12:05:22,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,757 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 232 flow. Second operand 5 states and 375 transitions. [2022-09-16 12:05:22,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 298 flow [2022-09-16 12:05:22,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:22,760 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 256 flow [2022-09-16 12:05:22,761 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2022-09-16 12:05:22,761 INFO L287 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2022-09-16 12:05:22,761 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 256 flow [2022-09-16 12:05:22,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:22,762 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:22,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 12:05:22,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:22,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1490972272, now seen corresponding path program 1 times [2022-09-16 12:05:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:22,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256908222] [2022-09-16 12:05:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:22,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:22,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256908222] [2022-09-16 12:05:22,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256908222] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:22,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:22,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:22,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484925048] [2022-09-16 12:05:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:22,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:22,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:22,799 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 94 [2022-09-16 12:05:22,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:22,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 94 [2022-09-16 12:05:22,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:22,883 INFO L130 PetriNetUnfolder]: 53/521 cut-off events. [2022-09-16 12:05:22,883 INFO L131 PetriNetUnfolder]: For 281/281 co-relation queries the response was YES. [2022-09-16 12:05:22,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 521 events. 53/521 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1963 event pairs, 23 based on Foata normal form. 4/463 useless extension candidates. Maximal degree in co-relation 736. Up to 92 conditions per place. [2022-09-16 12:05:22,888 INFO L137 encePairwiseOnDemand]: 88/94 looper letters, 17 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2022-09-16 12:05:22,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 85 transitions, 304 flow [2022-09-16 12:05:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 363 transitions. [2022-09-16 12:05:22,890 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7723404255319148 [2022-09-16 12:05:22,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 363 transitions. [2022-09-16 12:05:22,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 363 transitions. [2022-09-16 12:05:22,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:22,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 363 transitions. [2022-09-16 12:05:22,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,893 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 256 flow. Second operand 5 states and 363 transitions. [2022-09-16 12:05:22,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 85 transitions, 304 flow [2022-09-16 12:05:22,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 85 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:22,896 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 274 flow [2022-09-16 12:05:22,896 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2022-09-16 12:05:22,897 INFO L287 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2022-09-16 12:05:22,897 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 274 flow [2022-09-16 12:05:22,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:22,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:22,897 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:22,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 12:05:22,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:22,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1024499337, now seen corresponding path program 1 times [2022-09-16 12:05:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:22,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517785086] [2022-09-16 12:05:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:22,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:22,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517785086] [2022-09-16 12:05:22,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517785086] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:22,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146082528] [2022-09-16 12:05:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:22,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:22,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:22,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:22,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 12:05:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:23,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:23,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:23,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:23,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146082528] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:23,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:23,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132575608] [2022-09-16 12:05:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:23,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:23,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:23,094 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 94 [2022-09-16 12:05:23,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:23,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 94 [2022-09-16 12:05:23,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:23,204 INFO L130 PetriNetUnfolder]: 53/517 cut-off events. [2022-09-16 12:05:23,205 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-09-16 12:05:23,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 517 events. 53/517 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1974 event pairs, 23 based on Foata normal form. 4/459 useless extension candidates. Maximal degree in co-relation 457. Up to 104 conditions per place. [2022-09-16 12:05:23,208 INFO L137 encePairwiseOnDemand]: 89/94 looper letters, 21 selfloop transitions, 6 changer transitions 0/87 dead transitions. [2022-09-16 12:05:23,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 87 transitions, 330 flow [2022-09-16 12:05:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-09-16 12:05:23,210 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2022-09-16 12:05:23,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-09-16 12:05:23,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-09-16 12:05:23,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:23,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-09-16 12:05:23,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,213 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 94.0) internal successors, (752), 8 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,213 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 274 flow. Second operand 7 states and 504 transitions. [2022-09-16 12:05:23,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 87 transitions, 330 flow [2022-09-16 12:05:23,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 87 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:23,216 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 270 flow [2022-09-16 12:05:23,216 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2022-09-16 12:05:23,216 INFO L287 CegarLoopForPetriNet]: 90 programPoint places, 10 predicate places. [2022-09-16 12:05:23,216 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 270 flow [2022-09-16 12:05:23,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:23,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:23,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 12:05:23,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:23,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:23,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:23,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2114867653, now seen corresponding path program 1 times [2022-09-16 12:05:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:23,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020568992] [2022-09-16 12:05:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020568992] [2022-09-16 12:05:23,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020568992] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:23,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617726329] [2022-09-16 12:05:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:23,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:23,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:23,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 12:05:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:23,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:23,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:23,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:23,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617726329] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:23,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:23,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:23,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321902411] [2022-09-16 12:05:23,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:23,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:23,609 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 94 [2022-09-16 12:05:23,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 270 flow. Second operand has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:23,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 94 [2022-09-16 12:05:23,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:23,733 INFO L130 PetriNetUnfolder]: 51/511 cut-off events. [2022-09-16 12:05:23,733 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2022-09-16 12:05:23,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 511 events. 51/511 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2097 event pairs, 27 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 443. Up to 91 conditions per place. [2022-09-16 12:05:23,737 INFO L137 encePairwiseOnDemand]: 88/94 looper letters, 26 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-09-16 12:05:23,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 95 transitions, 378 flow [2022-09-16 12:05:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2022-09-16 12:05:23,740 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7671394799054374 [2022-09-16 12:05:23,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2022-09-16 12:05:23,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2022-09-16 12:05:23,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:23,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2022-09-16 12:05:23,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,743 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,743 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 270 flow. Second operand 9 states and 649 transitions. [2022-09-16 12:05:23,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 95 transitions, 378 flow [2022-09-16 12:05:23,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 95 transitions, 365 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:05:23,746 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 317 flow [2022-09-16 12:05:23,746 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=317, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2022-09-16 12:05:23,747 INFO L287 CegarLoopForPetriNet]: 90 programPoint places, 17 predicate places. [2022-09-16 12:05:23,747 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 317 flow [2022-09-16 12:05:23,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:23,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:23,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:23,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:23,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-09-16 12:05:23,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1453004974, now seen corresponding path program 1 times [2022-09-16 12:05:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:23,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730893613] [2022-09-16 12:05:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:05:24,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:24,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730893613] [2022-09-16 12:05:24,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730893613] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:24,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:24,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204525689] [2022-09-16 12:05:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:24,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:24,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:24,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:24,019 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 94 [2022-09-16 12:05:24,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:24,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 94 [2022-09-16 12:05:24,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:24,133 INFO L130 PetriNetUnfolder]: 56/554 cut-off events. [2022-09-16 12:05:24,134 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-09-16 12:05:24,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 554 events. 56/554 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2474 event pairs, 8 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 634. Up to 338 conditions per place. [2022-09-16 12:05:24,138 INFO L137 encePairwiseOnDemand]: 88/94 looper letters, 29 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2022-09-16 12:05:24,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 100 transitions, 422 flow [2022-09-16 12:05:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2022-09-16 12:05:24,140 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7978723404255319 [2022-09-16 12:05:24,140 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2022-09-16 12:05:24,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2022-09-16 12:05:24,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:24,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2022-09-16 12:05:24,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,142 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,142 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 317 flow. Second operand 5 states and 375 transitions. [2022-09-16 12:05:24,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 100 transitions, 422 flow [2022-09-16 12:05:24,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 100 transitions, 408 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 12:05:24,145 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 333 flow [2022-09-16 12:05:24,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2022-09-16 12:05:24,146 INFO L287 CegarLoopForPetriNet]: 90 programPoint places, 20 predicate places. [2022-09-16 12:05:24,146 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 333 flow [2022-09-16 12:05:24,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:24,147 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:24,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 12:05:24,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 284979004, now seen corresponding path program 1 times [2022-09-16 12:05:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:24,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224051745] [2022-09-16 12:05:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-09-16 12:05:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224051745] [2022-09-16 12:05:24,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224051745] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:24,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:24,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682989791] [2022-09-16 12:05:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:24,191 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 94 [2022-09-16 12:05:24,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:24,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 94 [2022-09-16 12:05:24,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:24,309 INFO L130 PetriNetUnfolder]: 56/528 cut-off events. [2022-09-16 12:05:24,310 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2022-09-16 12:05:24,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 528 events. 56/528 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2245 event pairs, 34 based on Foata normal form. 26/554 useless extension candidates. Maximal degree in co-relation 705. Up to 158 conditions per place. [2022-09-16 12:05:24,314 INFO L137 encePairwiseOnDemand]: 88/94 looper letters, 16 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2022-09-16 12:05:24,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 91 transitions, 379 flow [2022-09-16 12:05:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2022-09-16 12:05:24,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7702127659574468 [2022-09-16 12:05:24,316 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2022-09-16 12:05:24,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2022-09-16 12:05:24,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:24,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2022-09-16 12:05:24,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,319 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 94.0) internal successors, (564), 6 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,319 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 333 flow. Second operand 5 states and 362 transitions. [2022-09-16 12:05:24,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 91 transitions, 379 flow [2022-09-16 12:05:24,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 91 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:24,323 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 351 flow [2022-09-16 12:05:24,323 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2022-09-16 12:05:24,324 INFO L287 CegarLoopForPetriNet]: 90 programPoint places, 23 predicate places. [2022-09-16 12:05:24,324 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 351 flow [2022-09-16 12:05:24,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:24,324 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:24,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 12:05:24,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash -129186581, now seen corresponding path program 1 times [2022-09-16 12:05:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:24,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492306236] [2022-09-16 12:05:24,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:24,351 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:24,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:24,383 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:24,383 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:24,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:24,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:24,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:24,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 12:05:24,384 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:24,384 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:24,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-09-16 12:05:24,416 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-09-16 12:05:24,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 101 transitions, 280 flow [2022-09-16 12:05:24,548 INFO L130 PetriNetUnfolder]: 213/1524 cut-off events. [2022-09-16 12:05:24,548 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2022-09-16 12:05:24,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1756 conditions, 1524 events. 213/1524 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8833 event pairs, 72 based on Foata normal form. 0/1237 useless extension candidates. Maximal degree in co-relation 910. Up to 192 conditions per place. [2022-09-16 12:05:24,556 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 101 transitions, 280 flow [2022-09-16 12:05:24,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 93 transitions, 264 flow [2022-09-16 12:05:24,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:24,565 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:24,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:24,567 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-09-16 12:05:24,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:24,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:24,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:24,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1870303402, now seen corresponding path program 1 times [2022-09-16 12:05:24,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:24,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300290973] [2022-09-16 12:05:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:24,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:24,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300290973] [2022-09-16 12:05:24,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300290973] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:24,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:24,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:24,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170018712] [2022-09-16 12:05:24,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:24,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:24,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:24,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:24,596 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-09-16 12:05:24,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:24,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-09-16 12:05:24,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:24,734 INFO L130 PetriNetUnfolder]: 134/985 cut-off events. [2022-09-16 12:05:24,734 INFO L131 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2022-09-16 12:05:24,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 985 events. 134/985 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4983 event pairs, 72 based on Foata normal form. 6/843 useless extension candidates. Maximal degree in co-relation 777. Up to 253 conditions per place. [2022-09-16 12:05:24,742 INFO L137 encePairwiseOnDemand]: 92/101 looper letters, 27 selfloop transitions, 4 changer transitions 1/97 dead transitions. [2022-09-16 12:05:24,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 334 flow [2022-09-16 12:05:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2022-09-16 12:05:24,745 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7960396039603961 [2022-09-16 12:05:24,745 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2022-09-16 12:05:24,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2022-09-16 12:05:24,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:24,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2022-09-16 12:05:24,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,783 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,783 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 264 flow. Second operand 5 states and 402 transitions. [2022-09-16 12:05:24,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 334 flow [2022-09-16 12:05:24,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:24,785 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 288 flow [2022-09-16 12:05:24,785 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2022-09-16 12:05:24,786 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2022-09-16 12:05:24,786 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 288 flow [2022-09-16 12:05:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:24,786 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:24,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 12:05:24,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash -53248545, now seen corresponding path program 1 times [2022-09-16 12:05:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:24,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347864494] [2022-09-16 12:05:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:24,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:24,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:24,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347864494] [2022-09-16 12:05:24,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347864494] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:24,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:24,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:24,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530581116] [2022-09-16 12:05:24,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:24,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:24,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:24,817 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-09-16 12:05:24,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:24,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-09-16 12:05:24,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:24,956 INFO L130 PetriNetUnfolder]: 134/974 cut-off events. [2022-09-16 12:05:24,956 INFO L131 PetriNetUnfolder]: For 638/638 co-relation queries the response was YES. [2022-09-16 12:05:24,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 974 events. 134/974 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4896 event pairs, 72 based on Foata normal form. 5/853 useless extension candidates. Maximal degree in co-relation 1436. Up to 206 conditions per place. [2022-09-16 12:05:24,967 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 19 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2022-09-16 12:05:24,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 92 transitions, 340 flow [2022-09-16 12:05:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2022-09-16 12:05:24,969 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7722772277227723 [2022-09-16 12:05:24,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2022-09-16 12:05:24,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2022-09-16 12:05:24,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:24,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2022-09-16 12:05:24,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,971 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,971 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 288 flow. Second operand 5 states and 390 transitions. [2022-09-16 12:05:24,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 92 transitions, 340 flow [2022-09-16 12:05:24,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 92 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:24,974 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 306 flow [2022-09-16 12:05:24,974 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2022-09-16 12:05:24,974 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 8 predicate places. [2022-09-16 12:05:24,975 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 306 flow [2022-09-16 12:05:24,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:24,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:24,975 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 12:05:24,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1650704307, now seen corresponding path program 1 times [2022-09-16 12:05:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:24,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848746882] [2022-09-16 12:05:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848746882] [2022-09-16 12:05:25,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848746882] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924059250] [2022-09-16 12:05:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:25,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:25,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:25,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 12:05:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:25,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:25,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:25,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:25,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924059250] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:25,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:25,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225139808] [2022-09-16 12:05:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:25,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:25,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:25,148 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-09-16 12:05:25,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:25,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-09-16 12:05:25,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:25,320 INFO L130 PetriNetUnfolder]: 134/969 cut-off events. [2022-09-16 12:05:25,320 INFO L131 PetriNetUnfolder]: For 663/663 co-relation queries the response was YES. [2022-09-16 12:05:25,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 969 events. 134/969 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4836 event pairs, 72 based on Foata normal form. 5/848 useless extension candidates. Maximal degree in co-relation 807. Up to 221 conditions per place. [2022-09-16 12:05:25,329 INFO L137 encePairwiseOnDemand]: 96/101 looper letters, 23 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2022-09-16 12:05:25,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 94 transitions, 366 flow [2022-09-16 12:05:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 541 transitions. [2022-09-16 12:05:25,331 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7652050919377652 [2022-09-16 12:05:25,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 541 transitions. [2022-09-16 12:05:25,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 541 transitions. [2022-09-16 12:05:25,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:25,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 541 transitions. [2022-09-16 12:05:25,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 101.0) internal successors, (808), 8 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,334 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 101.0) internal successors, (808), 8 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,334 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 306 flow. Second operand 7 states and 541 transitions. [2022-09-16 12:05:25,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 94 transitions, 366 flow [2022-09-16 12:05:25,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 94 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:25,337 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 302 flow [2022-09-16 12:05:25,337 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2022-09-16 12:05:25,337 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 10 predicate places. [2022-09-16 12:05:25,338 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 302 flow [2022-09-16 12:05:25,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:25,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:25,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-09-16 12:05:25,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1682203319, now seen corresponding path program 1 times [2022-09-16 12:05:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:25,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165616080] [2022-09-16 12:05:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:25,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165616080] [2022-09-16 12:05:25,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165616080] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:25,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188583570] [2022-09-16 12:05:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:25,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:25,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:25,582 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:25,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 12:05:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:25,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:25,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:25,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:25,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188583570] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:25,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:25,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095545479] [2022-09-16 12:05:25,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:25,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:25,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:25,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:25,720 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-09-16 12:05:25,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:25,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-09-16 12:05:25,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:25,926 INFO L130 PetriNetUnfolder]: 132/963 cut-off events. [2022-09-16 12:05:25,927 INFO L131 PetriNetUnfolder]: For 671/671 co-relation queries the response was YES. [2022-09-16 12:05:25,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 963 events. 132/963 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5034 event pairs, 76 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 792. Up to 206 conditions per place. [2022-09-16 12:05:25,936 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 28 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2022-09-16 12:05:25,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 414 flow [2022-09-16 12:05:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2022-09-16 12:05:25,938 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7656765676567657 [2022-09-16 12:05:25,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2022-09-16 12:05:25,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2022-09-16 12:05:25,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:25,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2022-09-16 12:05:25,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,942 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 101.0) internal successors, (1010), 10 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,942 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 302 flow. Second operand 9 states and 696 transitions. [2022-09-16 12:05:25,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 414 flow [2022-09-16 12:05:25,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 401 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:05:25,945 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 349 flow [2022-09-16 12:05:25,945 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=349, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2022-09-16 12:05:25,946 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 17 predicate places. [2022-09-16 12:05:25,946 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 349 flow [2022-09-16 12:05:25,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:25,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:25,946 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:25,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:26,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-09-16 12:05:26,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:26,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1893580084, now seen corresponding path program 1 times [2022-09-16 12:05:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:26,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428316259] [2022-09-16 12:05:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:05:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:26,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428316259] [2022-09-16 12:05:26,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428316259] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:26,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:26,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605839915] [2022-09-16 12:05:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:26,193 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-09-16 12:05:26,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:26,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-09-16 12:05:26,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:26,376 INFO L130 PetriNetUnfolder]: 141/1041 cut-off events. [2022-09-16 12:05:26,376 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2022-09-16 12:05:26,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1041 events. 141/1041 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5788 event pairs, 31 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 1183. Up to 737 conditions per place. [2022-09-16 12:05:26,385 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 32 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2022-09-16 12:05:26,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 108 transitions, 465 flow [2022-09-16 12:05:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2022-09-16 12:05:26,386 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7980198019801981 [2022-09-16 12:05:26,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2022-09-16 12:05:26,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2022-09-16 12:05:26,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:26,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2022-09-16 12:05:26,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,389 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 349 flow. Second operand 5 states and 403 transitions. [2022-09-16 12:05:26,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 108 transitions, 465 flow [2022-09-16 12:05:26,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 451 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 12:05:26,392 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 365 flow [2022-09-16 12:05:26,393 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2022-09-16 12:05:26,393 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 20 predicate places. [2022-09-16 12:05:26,393 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 365 flow [2022-09-16 12:05:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:26,394 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-16 12:05:26,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash 648324514, now seen corresponding path program 1 times [2022-09-16 12:05:26,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:26,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721996830] [2022-09-16 12:05:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-09-16 12:05:26,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:26,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721996830] [2022-09-16 12:05:26,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721996830] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:26,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:26,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12150155] [2022-09-16 12:05:26,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:26,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:26,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:26,433 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-09-16 12:05:26,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:26,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-09-16 12:05:26,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:26,603 INFO L130 PetriNetUnfolder]: 141/984 cut-off events. [2022-09-16 12:05:26,604 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2022-09-16 12:05:26,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2438 conditions, 984 events. 141/984 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5225 event pairs, 88 based on Foata normal form. 57/1041 useless extension candidates. Maximal degree in co-relation 1314. Up to 342 conditions per place. [2022-09-16 12:05:26,617 INFO L137 encePairwiseOnDemand]: 95/101 looper letters, 18 selfloop transitions, 8 changer transitions 0/98 dead transitions. [2022-09-16 12:05:26,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 98 transitions, 415 flow [2022-09-16 12:05:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2022-09-16 12:05:26,619 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7702970297029703 [2022-09-16 12:05:26,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2022-09-16 12:05:26,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2022-09-16 12:05:26,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:26,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2022-09-16 12:05:26,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,621 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,621 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 365 flow. Second operand 5 states and 389 transitions. [2022-09-16 12:05:26,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 98 transitions, 415 flow [2022-09-16 12:05:26,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 98 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:26,625 INFO L231 Difference]: Finished difference. Result has 121 places, 98 transitions, 383 flow [2022-09-16 12:05:26,626 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=121, PETRI_TRANSITIONS=98} [2022-09-16 12:05:26,627 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 23 predicate places. [2022-09-16 12:05:26,627 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 98 transitions, 383 flow [2022-09-16 12:05:26,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:26,628 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-16 12:05:26,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1376775983, now seen corresponding path program 1 times [2022-09-16 12:05:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:26,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809820546] [2022-09-16 12:05:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:26,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809820546] [2022-09-16 12:05:26,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809820546] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:26,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407311859] [2022-09-16 12:05:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:26,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:26,704 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:26,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 12:05:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:26,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 12:05:26,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:26,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:26,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407311859] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:26,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:26,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 12:05:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574884834] [2022-09-16 12:05:26,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:05:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:05:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:05:26,945 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 101 [2022-09-16 12:05:26,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 98 transitions, 383 flow. Second operand has 18 states, 18 states have (on average 76.5) internal successors, (1377), 18 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:26,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:26,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 101 [2022-09-16 12:05:26,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:27,135 INFO L130 PetriNetUnfolder]: 0/127 cut-off events. [2022-09-16 12:05:27,135 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-09-16 12:05:27,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 127 events. 0/127 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 60 event pairs, 0 based on Foata normal form. 4/131 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2022-09-16 12:05:27,136 INFO L137 encePairwiseOnDemand]: 96/101 looper letters, 33 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2022-09-16 12:05:27,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 105 transitions, 505 flow [2022-09-16 12:05:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 12:05:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 12:05:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1589 transitions. [2022-09-16 12:05:27,139 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7491749174917491 [2022-09-16 12:05:27,139 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1589 transitions. [2022-09-16 12:05:27,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1589 transitions. [2022-09-16 12:05:27,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:27,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1589 transitions. [2022-09-16 12:05:27,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 75.66666666666667) internal successors, (1589), 21 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:27,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 101.0) internal successors, (2222), 22 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:27,145 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 101.0) internal successors, (2222), 22 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:27,145 INFO L175 Difference]: Start difference. First operand has 121 places, 98 transitions, 383 flow. Second operand 21 states and 1589 transitions. [2022-09-16 12:05:27,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 105 transitions, 505 flow [2022-09-16 12:05:27,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 105 transitions, 456 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-09-16 12:05:27,148 INFO L231 Difference]: Finished difference. Result has 120 places, 85 transitions, 331 flow [2022-09-16 12:05:27,148 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=331, PETRI_PLACES=120, PETRI_TRANSITIONS=85} [2022-09-16 12:05:27,149 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 22 predicate places. [2022-09-16 12:05:27,149 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 85 transitions, 331 flow [2022-09-16 12:05:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 76.5) internal successors, (1377), 18 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:27,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:27,150 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:27,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:27,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-09-16 12:05:27,372 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1846637765, now seen corresponding path program 1 times [2022-09-16 12:05:27,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:27,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280564762] [2022-09-16 12:05:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:27,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:27,392 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:27,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:27,416 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:27,416 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:27,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:27,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:27,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:27,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:27,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-16 12:05:27,417 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:27,419 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:27,420 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-09-16 12:05:27,441 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2022-09-16 12:05:27,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 314 flow [2022-09-16 12:05:27,756 INFO L130 PetriNetUnfolder]: 472/2958 cut-off events. [2022-09-16 12:05:27,756 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2022-09-16 12:05:27,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 2958 events. 472/2958 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 20925 event pairs, 201 based on Foata normal form. 0/2410 useless extension candidates. Maximal degree in co-relation 1745. Up to 448 conditions per place. [2022-09-16 12:05:27,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 314 flow [2022-09-16 12:05:27,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 100 transitions, 298 flow [2022-09-16 12:05:27,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:27,782 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:27,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:27,784 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-09-16 12:05:27,784 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:27,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:27,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:27,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash -106960825, now seen corresponding path program 1 times [2022-09-16 12:05:27,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:27,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974056525] [2022-09-16 12:05:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:27,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974056525] [2022-09-16 12:05:27,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974056525] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:27,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:27,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015943065] [2022-09-16 12:05:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:27,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:27,807 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2022-09-16 12:05:27,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 100 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:27,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:27,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2022-09-16 12:05:27,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:28,092 INFO L130 PetriNetUnfolder]: 327/1904 cut-off events. [2022-09-16 12:05:28,093 INFO L131 PetriNetUnfolder]: For 1421/1421 co-relation queries the response was YES. [2022-09-16 12:05:28,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1904 events. 327/1904 cut-off events. For 1421/1421 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 11907 event pairs, 201 based on Foata normal form. 7/1631 useless extension candidates. Maximal degree in co-relation 1476. Up to 520 conditions per place. [2022-09-16 12:05:28,104 INFO L137 encePairwiseOnDemand]: 99/108 looper letters, 29 selfloop transitions, 4 changer transitions 1/104 dead transitions. [2022-09-16 12:05:28,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 372 flow [2022-09-16 12:05:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2022-09-16 12:05:28,106 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2022-09-16 12:05:28,106 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2022-09-16 12:05:28,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2022-09-16 12:05:28,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:28,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2022-09-16 12:05:28,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,108 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,108 INFO L175 Difference]: Start difference. First operand has 106 places, 100 transitions, 298 flow. Second operand 5 states and 429 transitions. [2022-09-16 12:05:28,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 372 flow [2022-09-16 12:05:28,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 104 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:28,111 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 322 flow [2022-09-16 12:05:28,111 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2022-09-16 12:05:28,115 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, 6 predicate places. [2022-09-16 12:05:28,115 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 322 flow [2022-09-16 12:05:28,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:28,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:28,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-16 12:05:28,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash 292633557, now seen corresponding path program 1 times [2022-09-16 12:05:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:28,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452246005] [2022-09-16 12:05:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:28,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452246005] [2022-09-16 12:05:28,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452246005] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:28,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:28,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:28,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118543506] [2022-09-16 12:05:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:28,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:28,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:28,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:28,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:28,148 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2022-09-16 12:05:28,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:28,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2022-09-16 12:05:28,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:28,393 INFO L130 PetriNetUnfolder]: 327/1891 cut-off events. [2022-09-16 12:05:28,393 INFO L131 PetriNetUnfolder]: For 1434/1434 co-relation queries the response was YES. [2022-09-16 12:05:28,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 1891 events. 327/1891 cut-off events. For 1434/1434 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 11795 event pairs, 201 based on Foata normal form. 6/1643 useless extension candidates. Maximal degree in co-relation 2889. Up to 464 conditions per place. [2022-09-16 12:05:28,415 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 21 selfloop transitions, 8 changer transitions 0/99 dead transitions. [2022-09-16 12:05:28,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 99 transitions, 378 flow [2022-09-16 12:05:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2022-09-16 12:05:28,419 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7722222222222223 [2022-09-16 12:05:28,419 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 417 transitions. [2022-09-16 12:05:28,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 417 transitions. [2022-09-16 12:05:28,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:28,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 417 transitions. [2022-09-16 12:05:28,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,422 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,422 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 322 flow. Second operand 5 states and 417 transitions. [2022-09-16 12:05:28,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 99 transitions, 378 flow [2022-09-16 12:05:28,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 99 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:28,425 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 340 flow [2022-09-16 12:05:28,425 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2022-09-16 12:05:28,428 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, 8 predicate places. [2022-09-16 12:05:28,428 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 340 flow [2022-09-16 12:05:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:28,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:28,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-16 12:05:28,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:28,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:28,429 INFO L85 PathProgramCache]: Analyzing trace with hash 481706371, now seen corresponding path program 1 times [2022-09-16 12:05:28,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:28,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330095284] [2022-09-16 12:05:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:28,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:28,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330095284] [2022-09-16 12:05:28,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330095284] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:28,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598234655] [2022-09-16 12:05:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:28,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:28,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:28,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:28,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 12:05:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:28,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:28,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:28,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:28,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598234655] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:28,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:28,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:28,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993914369] [2022-09-16 12:05:28,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:28,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:28,588 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2022-09-16 12:05:28,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:28,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2022-09-16 12:05:28,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:28,875 INFO L130 PetriNetUnfolder]: 327/1885 cut-off events. [2022-09-16 12:05:28,876 INFO L131 PetriNetUnfolder]: For 1463/1463 co-relation queries the response was YES. [2022-09-16 12:05:28,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 1885 events. 327/1885 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11825 event pairs, 201 based on Foata normal form. 6/1637 useless extension candidates. Maximal degree in co-relation 1510. Up to 482 conditions per place. [2022-09-16 12:05:28,890 INFO L137 encePairwiseOnDemand]: 103/108 looper letters, 25 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2022-09-16 12:05:28,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 101 transitions, 404 flow [2022-09-16 12:05:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 578 transitions. [2022-09-16 12:05:28,892 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7645502645502645 [2022-09-16 12:05:28,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 578 transitions. [2022-09-16 12:05:28,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 578 transitions. [2022-09-16 12:05:28,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:28,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 578 transitions. [2022-09-16 12:05:28,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,895 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 340 flow. Second operand 7 states and 578 transitions. [2022-09-16 12:05:28,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 101 transitions, 404 flow [2022-09-16 12:05:28,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 101 transitions, 392 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:28,899 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 336 flow [2022-09-16 12:05:28,899 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2022-09-16 12:05:28,899 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, 10 predicate places. [2022-09-16 12:05:28,899 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 336 flow [2022-09-16 12:05:28,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:28,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:28,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:28,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:29,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-09-16 12:05:29,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:29,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1367654922, now seen corresponding path program 1 times [2022-09-16 12:05:29,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:29,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142155076] [2022-09-16 12:05:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142155076] [2022-09-16 12:05:29,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142155076] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61289450] [2022-09-16 12:05:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:29,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:29,158 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:29,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 12:05:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:29,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:29,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:29,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:29,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61289450] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:29,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:29,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:29,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394904684] [2022-09-16 12:05:29,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:29,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:29,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:29,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2022-09-16 12:05:29,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:29,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:29,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2022-09-16 12:05:29,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:29,584 INFO L130 PetriNetUnfolder]: 325/1879 cut-off events. [2022-09-16 12:05:29,584 INFO L131 PetriNetUnfolder]: For 1472/1472 co-relation queries the response was YES. [2022-09-16 12:05:29,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1879 events. 325/1879 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 11985 event pairs, 205 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 1494. Up to 465 conditions per place. [2022-09-16 12:05:29,602 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 30 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2022-09-16 12:05:29,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 109 transitions, 452 flow [2022-09-16 12:05:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 743 transitions. [2022-09-16 12:05:29,604 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.76440329218107 [2022-09-16 12:05:29,604 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 743 transitions. [2022-09-16 12:05:29,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 743 transitions. [2022-09-16 12:05:29,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:29,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 743 transitions. [2022-09-16 12:05:29,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.55555555555556) internal successors, (743), 9 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:29,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:29,608 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:29,608 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 336 flow. Second operand 9 states and 743 transitions. [2022-09-16 12:05:29,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 109 transitions, 452 flow [2022-09-16 12:05:29,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 109 transitions, 439 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:05:29,612 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 383 flow [2022-09-16 12:05:29,612 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=383, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2022-09-16 12:05:29,613 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, 17 predicate places. [2022-09-16 12:05:29,613 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 383 flow [2022-09-16 12:05:29,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:29,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:29,614 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:29,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:29,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-09-16 12:05:29,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1389344269, now seen corresponding path program 1 times [2022-09-16 12:05:29,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:29,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869928314] [2022-09-16 12:05:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:29,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:05:29,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:29,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869928314] [2022-09-16 12:05:29,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869928314] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:29,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:29,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:29,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511399427] [2022-09-16 12:05:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:29,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:29,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:29,882 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2022-09-16 12:05:29,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:29,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:29,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2022-09-16 12:05:29,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:30,210 INFO L130 PetriNetUnfolder]: 339/1999 cut-off events. [2022-09-16 12:05:30,210 INFO L131 PetriNetUnfolder]: For 653/653 co-relation queries the response was YES. [2022-09-16 12:05:30,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4334 conditions, 1999 events. 339/1999 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13264 event pairs, 103 based on Foata normal form. 0/1759 useless extension candidates. Maximal degree in co-relation 2243. Up to 1569 conditions per place. [2022-09-16 12:05:30,231 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 35 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2022-09-16 12:05:30,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 116 transitions, 510 flow [2022-09-16 12:05:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2022-09-16 12:05:30,233 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7981481481481482 [2022-09-16 12:05:30,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2022-09-16 12:05:30,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2022-09-16 12:05:30,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:30,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2022-09-16 12:05:30,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,235 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 383 flow. Second operand 5 states and 431 transitions. [2022-09-16 12:05:30,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 116 transitions, 510 flow [2022-09-16 12:05:30,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 116 transitions, 496 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 12:05:30,240 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 399 flow [2022-09-16 12:05:30,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2022-09-16 12:05:30,241 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, 20 predicate places. [2022-09-16 12:05:30,241 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 399 flow [2022-09-16 12:05:30,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:30,241 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:30,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-16 12:05:30,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:30,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1036474590, now seen corresponding path program 1 times [2022-09-16 12:05:30,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:30,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759046188] [2022-09-16 12:05:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:30,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-09-16 12:05:30,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759046188] [2022-09-16 12:05:30,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759046188] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:30,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:30,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:30,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497145652] [2022-09-16 12:05:30,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:30,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:30,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:30,273 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2022-09-16 12:05:30,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:30,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2022-09-16 12:05:30,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:30,583 INFO L130 PetriNetUnfolder]: 339/1879 cut-off events. [2022-09-16 12:05:30,584 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-09-16 12:05:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 1879 events. 339/1879 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11945 event pairs, 223 based on Foata normal form. 120/1999 useless extension candidates. Maximal degree in co-relation 2472. Up to 735 conditions per place. [2022-09-16 12:05:30,606 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 20 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2022-09-16 12:05:30,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 105 transitions, 453 flow [2022-09-16 12:05:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 416 transitions. [2022-09-16 12:05:30,607 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7703703703703704 [2022-09-16 12:05:30,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 416 transitions. [2022-09-16 12:05:30,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 416 transitions. [2022-09-16 12:05:30,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:30,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 416 transitions. [2022-09-16 12:05:30,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,610 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 399 flow. Second operand 5 states and 416 transitions. [2022-09-16 12:05:30,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 105 transitions, 453 flow [2022-09-16 12:05:30,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 105 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:30,616 INFO L231 Difference]: Finished difference. Result has 129 places, 105 transitions, 417 flow [2022-09-16 12:05:30,617 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=129, PETRI_TRANSITIONS=105} [2022-09-16 12:05:30,617 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, 23 predicate places. [2022-09-16 12:05:30,617 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 105 transitions, 417 flow [2022-09-16 12:05:30,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:30,618 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:30,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-16 12:05:30,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:30,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2065940547, now seen corresponding path program 1 times [2022-09-16 12:05:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:30,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857820112] [2022-09-16 12:05:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:30,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:30,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:30,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857820112] [2022-09-16 12:05:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857820112] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580295995] [2022-09-16 12:05:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:30,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:30,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:30,690 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:30,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 12:05:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:30,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 12:05:30,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:30,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:30,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580295995] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:30,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:30,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 12:05:30,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982940133] [2022-09-16 12:05:30,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:30,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:05:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:05:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:05:30,947 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 108 [2022-09-16 12:05:30,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 105 transitions, 417 flow. Second operand has 18 states, 18 states have (on average 81.5) internal successors, (1467), 18 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:30,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:30,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 108 [2022-09-16 12:05:30,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:31,411 INFO L130 PetriNetUnfolder]: 321/1733 cut-off events. [2022-09-16 12:05:31,412 INFO L131 PetriNetUnfolder]: For 1909/1909 co-relation queries the response was YES. [2022-09-16 12:05:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 1733 events. 321/1733 cut-off events. For 1909/1909 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11657 event pairs, 321 based on Foata normal form. 4/1737 useless extension candidates. Maximal degree in co-relation 3695. Up to 453 conditions per place. [2022-09-16 12:05:31,427 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 46 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2022-09-16 12:05:31,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 140 transitions, 713 flow [2022-09-16 12:05:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 12:05:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 12:05:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1709 transitions. [2022-09-16 12:05:31,430 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7535273368606702 [2022-09-16 12:05:31,430 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1709 transitions. [2022-09-16 12:05:31,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1709 transitions. [2022-09-16 12:05:31,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:31,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1709 transitions. [2022-09-16 12:05:31,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 81.38095238095238) internal successors, (1709), 21 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:31,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 108.0) internal successors, (2376), 22 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) [2022-09-16 12:05:31,436 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 108.0) internal successors, (2376), 22 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) [2022-09-16 12:05:31,436 INFO L175 Difference]: Start difference. First operand has 129 places, 105 transitions, 417 flow. Second operand 21 states and 1709 transitions. [2022-09-16 12:05:31,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 140 transitions, 713 flow [2022-09-16 12:05:31,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 140 transitions, 701 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:31,445 INFO L231 Difference]: Finished difference. Result has 151 places, 118 transitions, 569 flow [2022-09-16 12:05:31,445 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=569, PETRI_PLACES=151, PETRI_TRANSITIONS=118} [2022-09-16 12:05:31,445 INFO L287 CegarLoopForPetriNet]: 106 programPoint places, 45 predicate places. [2022-09-16 12:05:31,445 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 118 transitions, 569 flow [2022-09-16 12:05:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.5) internal successors, (1467), 18 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:31,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:31,446 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:31,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:31,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:31,672 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1657062307, now seen corresponding path program 1 times [2022-09-16 12:05:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:31,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787163912] [2022-09-16 12:05:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:31,695 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:31,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:31,719 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:31,719 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:31,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:31,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:31,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:31,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:31,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-16 12:05:31,719 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:31,720 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:31,720 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-09-16 12:05:31,739 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-09-16 12:05:31,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 115 transitions, 350 flow [2022-09-16 12:05:32,388 INFO L130 PetriNetUnfolder]: 1051/5864 cut-off events. [2022-09-16 12:05:32,389 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2022-09-16 12:05:32,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6949 conditions, 5864 events. 1051/5864 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 49879 event pairs, 522 based on Foata normal form. 0/4799 useless extension candidates. Maximal degree in co-relation 3445. Up to 1024 conditions per place. [2022-09-16 12:05:32,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 115 transitions, 350 flow [2022-09-16 12:05:32,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 107 transitions, 334 flow [2022-09-16 12:05:32,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:32,435 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:32,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:32,437 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-09-16 12:05:32,437 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:32,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:32,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:32,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:32,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2088518911, now seen corresponding path program 1 times [2022-09-16 12:05:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:32,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684935057] [2022-09-16 12:05:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:32,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684935057] [2022-09-16 12:05:32,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684935057] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:32,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:32,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:32,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055312376] [2022-09-16 12:05:32,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:32,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:32,458 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-09-16 12:05:32,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 334 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:32,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:32,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-09-16 12:05:32,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:32,917 INFO L130 PetriNetUnfolder]: 776/3783 cut-off events. [2022-09-16 12:05:32,917 INFO L131 PetriNetUnfolder]: For 3184/3184 co-relation queries the response was YES. [2022-09-16 12:05:32,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5983 conditions, 3783 events. 776/3783 cut-off events. For 3184/3184 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 28270 event pairs, 522 based on Foata normal form. 8/3251 useless extension candidates. Maximal degree in co-relation 2928. Up to 1107 conditions per place. [2022-09-16 12:05:32,955 INFO L137 encePairwiseOnDemand]: 106/115 looper letters, 31 selfloop transitions, 4 changer transitions 1/111 dead transitions. [2022-09-16 12:05:32,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 111 transitions, 412 flow [2022-09-16 12:05:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2022-09-16 12:05:32,956 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7930434782608695 [2022-09-16 12:05:32,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2022-09-16 12:05:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2022-09-16 12:05:32,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:32,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2022-09-16 12:05:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:32,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:32,958 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:32,958 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 334 flow. Second operand 5 states and 456 transitions. [2022-09-16 12:05:32,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 111 transitions, 412 flow [2022-09-16 12:05:32,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 111 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:32,962 INFO L231 Difference]: Finished difference. Result has 120 places, 106 transitions, 358 flow [2022-09-16 12:05:32,962 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=120, PETRI_TRANSITIONS=106} [2022-09-16 12:05:32,963 INFO L287 CegarLoopForPetriNet]: 114 programPoint places, 6 predicate places. [2022-09-16 12:05:32,963 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 106 transitions, 358 flow [2022-09-16 12:05:32,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:32,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:32,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-16 12:05:32,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1766348718, now seen corresponding path program 1 times [2022-09-16 12:05:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:32,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331348285] [2022-09-16 12:05:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:32,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331348285] [2022-09-16 12:05:32,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331348285] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:32,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:32,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907687487] [2022-09-16 12:05:32,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:32,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:32,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:32,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-09-16 12:05:32,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 106 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:32,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:32,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-09-16 12:05:32,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:33,417 INFO L130 PetriNetUnfolder]: 776/3768 cut-off events. [2022-09-16 12:05:33,418 INFO L131 PetriNetUnfolder]: For 3198/3198 co-relation queries the response was YES. [2022-09-16 12:05:33,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6008 conditions, 3768 events. 776/3768 cut-off events. For 3198/3198 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 28427 event pairs, 522 based on Foata normal form. 7/3265 useless extension candidates. Maximal degree in co-relation 5943. Up to 1042 conditions per place. [2022-09-16 12:05:33,451 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 23 selfloop transitions, 8 changer transitions 0/106 dead transitions. [2022-09-16 12:05:33,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 106 transitions, 418 flow [2022-09-16 12:05:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 444 transitions. [2022-09-16 12:05:33,452 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7721739130434783 [2022-09-16 12:05:33,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 444 transitions. [2022-09-16 12:05:33,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 444 transitions. [2022-09-16 12:05:33,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:33,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 444 transitions. [2022-09-16 12:05:33,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:33,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:33,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:33,454 INFO L175 Difference]: Start difference. First operand has 120 places, 106 transitions, 358 flow. Second operand 5 states and 444 transitions. [2022-09-16 12:05:33,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 106 transitions, 418 flow [2022-09-16 12:05:33,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 106 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:33,459 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 376 flow [2022-09-16 12:05:33,459 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2022-09-16 12:05:33,459 INFO L287 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2022-09-16 12:05:33,459 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 376 flow [2022-09-16 12:05:33,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:33,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:33,460 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:33,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-16 12:05:33,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1077765401, now seen corresponding path program 1 times [2022-09-16 12:05:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:33,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889677628] [2022-09-16 12:05:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:33,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:33,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:33,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889677628] [2022-09-16 12:05:33,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889677628] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:33,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127633457] [2022-09-16 12:05:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:33,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:33,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:33,501 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:33,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 12:05:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:33,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:33,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:33,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:33,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127633457] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:33,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:33,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:33,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23709121] [2022-09-16 12:05:33,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:33,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:33,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:33,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-09-16 12:05:33,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:33,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:33,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-09-16 12:05:33,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:34,122 INFO L130 PetriNetUnfolder]: 776/3761 cut-off events. [2022-09-16 12:05:34,122 INFO L131 PetriNetUnfolder]: For 3231/3231 co-relation queries the response was YES. [2022-09-16 12:05:34,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6029 conditions, 3761 events. 776/3761 cut-off events. For 3231/3231 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 28225 event pairs, 522 based on Foata normal form. 7/3258 useless extension candidates. Maximal degree in co-relation 3074. Up to 1063 conditions per place. [2022-09-16 12:05:34,158 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 27 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2022-09-16 12:05:34,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 108 transitions, 444 flow [2022-09-16 12:05:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2022-09-16 12:05:34,160 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7639751552795031 [2022-09-16 12:05:34,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2022-09-16 12:05:34,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2022-09-16 12:05:34,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:34,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2022-09-16 12:05:34,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:34,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:34,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:34,162 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 376 flow. Second operand 7 states and 615 transitions. [2022-09-16 12:05:34,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 108 transitions, 444 flow [2022-09-16 12:05:34,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 108 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:34,166 INFO L231 Difference]: Finished difference. Result has 124 places, 105 transitions, 372 flow [2022-09-16 12:05:34,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=372, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2022-09-16 12:05:34,167 INFO L287 CegarLoopForPetriNet]: 114 programPoint places, 10 predicate places. [2022-09-16 12:05:34,167 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 372 flow [2022-09-16 12:05:34,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:34,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:34,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:34,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:34,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:34,387 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2015913916, now seen corresponding path program 1 times [2022-09-16 12:05:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629904260] [2022-09-16 12:05:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:34,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629904260] [2022-09-16 12:05:34,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629904260] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:34,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837152874] [2022-09-16 12:05:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:34,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:34,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:34,419 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:34,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-09-16 12:05:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:34,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:34,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:34,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:34,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837152874] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:34,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:34,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:34,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688363945] [2022-09-16 12:05:34,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:34,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:34,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:34,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:34,562 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-09-16 12:05:34,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 372 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:34,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:34,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-09-16 12:05:34,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:35,118 INFO L130 PetriNetUnfolder]: 774/3755 cut-off events. [2022-09-16 12:05:35,119 INFO L131 PetriNetUnfolder]: For 3241/3241 co-relation queries the response was YES. [2022-09-16 12:05:35,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6013 conditions, 3755 events. 774/3755 cut-off events. For 3241/3241 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 28589 event pairs, 526 based on Foata normal form. 2/3247 useless extension candidates. Maximal degree in co-relation 3074. Up to 1044 conditions per place. [2022-09-16 12:05:35,153 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 32 selfloop transitions, 9 changer transitions 0/116 dead transitions. [2022-09-16 12:05:35,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 116 transitions, 492 flow [2022-09-16 12:05:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 790 transitions. [2022-09-16 12:05:35,155 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7632850241545893 [2022-09-16 12:05:35,155 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 790 transitions. [2022-09-16 12:05:35,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 790 transitions. [2022-09-16 12:05:35,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:35,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 790 transitions. [2022-09-16 12:05:35,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.77777777777777) internal successors, (790), 9 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:35,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:35,157 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:35,158 INFO L175 Difference]: Start difference. First operand has 124 places, 105 transitions, 372 flow. Second operand 9 states and 790 transitions. [2022-09-16 12:05:35,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 116 transitions, 492 flow [2022-09-16 12:05:35,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 116 transitions, 479 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:05:35,162 INFO L231 Difference]: Finished difference. Result has 131 places, 109 transitions, 419 flow [2022-09-16 12:05:35,162 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=419, PETRI_PLACES=131, PETRI_TRANSITIONS=109} [2022-09-16 12:05:35,162 INFO L287 CegarLoopForPetriNet]: 114 programPoint places, 17 predicate places. [2022-09-16 12:05:35,162 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 109 transitions, 419 flow [2022-09-16 12:05:35,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:35,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:35,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:35,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:35,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-09-16 12:05:35,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1464170173, now seen corresponding path program 1 times [2022-09-16 12:05:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486366483] [2022-09-16 12:05:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:35,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:05:35,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:35,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486366483] [2022-09-16 12:05:35,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486366483] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:35,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:35,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600542933] [2022-09-16 12:05:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:35,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:35,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:35,435 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-09-16 12:05:35,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 109 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:35,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:35,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-09-16 12:05:35,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:36,060 INFO L130 PetriNetUnfolder]: 794/3924 cut-off events. [2022-09-16 12:05:36,060 INFO L131 PetriNetUnfolder]: For 1292/1292 co-relation queries the response was YES. [2022-09-16 12:05:36,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 3924 events. 794/3924 cut-off events. For 1292/1292 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 30439 event pairs, 304 based on Foata normal form. 0/3430 useless extension candidates. Maximal degree in co-relation 4358. Up to 3298 conditions per place. [2022-09-16 12:05:36,099 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 38 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-09-16 12:05:36,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 124 transitions, 557 flow [2022-09-16 12:05:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2022-09-16 12:05:36,100 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7982608695652174 [2022-09-16 12:05:36,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2022-09-16 12:05:36,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2022-09-16 12:05:36,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:36,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2022-09-16 12:05:36,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,103 INFO L175 Difference]: Start difference. First operand has 131 places, 109 transitions, 419 flow. Second operand 5 states and 459 transitions. [2022-09-16 12:05:36,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 124 transitions, 557 flow [2022-09-16 12:05:36,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 124 transitions, 543 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 12:05:36,108 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 435 flow [2022-09-16 12:05:36,108 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2022-09-16 12:05:36,108 INFO L287 CegarLoopForPetriNet]: 114 programPoint places, 20 predicate places. [2022-09-16 12:05:36,108 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 435 flow [2022-09-16 12:05:36,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:36,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:36,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-16 12:05:36,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1216734982, now seen corresponding path program 1 times [2022-09-16 12:05:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:36,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559070813] [2022-09-16 12:05:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-09-16 12:05:36,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:36,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559070813] [2022-09-16 12:05:36,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559070813] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:36,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:36,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:36,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397150617] [2022-09-16 12:05:36,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:36,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:36,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:36,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:36,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:36,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-09-16 12:05:36,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:36,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-09-16 12:05:36,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:36,754 INFO L130 PetriNetUnfolder]: 794/3677 cut-off events. [2022-09-16 12:05:36,754 INFO L131 PetriNetUnfolder]: For 1669/1669 co-relation queries the response was YES. [2022-09-16 12:05:36,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9329 conditions, 3677 events. 794/3677 cut-off events. For 1669/1669 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 27345 event pairs, 551 based on Foata normal form. 247/3924 useless extension candidates. Maximal degree in co-relation 4755. Up to 1577 conditions per place. [2022-09-16 12:05:36,792 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 22 selfloop transitions, 8 changer transitions 0/112 dead transitions. [2022-09-16 12:05:36,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 112 transitions, 493 flow [2022-09-16 12:05:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2022-09-16 12:05:36,793 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7704347826086957 [2022-09-16 12:05:36,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2022-09-16 12:05:36,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2022-09-16 12:05:36,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:36,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2022-09-16 12:05:36,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,795 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 435 flow. Second operand 5 states and 443 transitions. [2022-09-16 12:05:36,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 112 transitions, 493 flow [2022-09-16 12:05:36,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 112 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:36,801 INFO L231 Difference]: Finished difference. Result has 137 places, 112 transitions, 453 flow [2022-09-16 12:05:36,802 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=137, PETRI_TRANSITIONS=112} [2022-09-16 12:05:36,802 INFO L287 CegarLoopForPetriNet]: 114 programPoint places, 23 predicate places. [2022-09-16 12:05:36,802 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 112 transitions, 453 flow [2022-09-16 12:05:36,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:36,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:36,803 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:36,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-09-16 12:05:36,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:36,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash 599217940, now seen corresponding path program 1 times [2022-09-16 12:05:36,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:36,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793749503] [2022-09-16 12:05:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:36,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:36,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:36,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793749503] [2022-09-16 12:05:36,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793749503] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:36,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527468835] [2022-09-16 12:05:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:36,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:36,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:36,870 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:36,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-16 12:05:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:36,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 12:05:36,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:37,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:37,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527468835] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:37,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:37,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 12:05:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112151000] [2022-09-16 12:05:37,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:05:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:05:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:05:37,119 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-09-16 12:05:37,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 112 transitions, 453 flow. Second operand has 18 states, 18 states have (on average 86.5) internal successors, (1557), 18 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:37,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:37,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-09-16 12:05:37,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:37,827 INFO L130 PetriNetUnfolder]: 776/3531 cut-off events. [2022-09-16 12:05:37,827 INFO L131 PetriNetUnfolder]: For 4137/4137 co-relation queries the response was YES. [2022-09-16 12:05:37,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8196 conditions, 3531 events. 776/3531 cut-off events. For 4137/4137 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 28628 event pairs, 649 based on Foata normal form. 4/3535 useless extension candidates. Maximal degree in co-relation 4222. Up to 1039 conditions per place. [2022-09-16 12:05:37,875 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 48 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2022-09-16 12:05:37,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 147 transitions, 753 flow [2022-09-16 12:05:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 12:05:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 12:05:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1816 transitions. [2022-09-16 12:05:37,878 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7519668737060041 [2022-09-16 12:05:37,878 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1816 transitions. [2022-09-16 12:05:37,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1816 transitions. [2022-09-16 12:05:37,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:37,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1816 transitions. [2022-09-16 12:05:37,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 86.47619047619048) internal successors, (1816), 21 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:37,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 115.0) internal successors, (2530), 22 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:37,883 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 115.0) internal successors, (2530), 22 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:37,883 INFO L175 Difference]: Start difference. First operand has 137 places, 112 transitions, 453 flow. Second operand 21 states and 1816 transitions. [2022-09-16 12:05:37,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 147 transitions, 753 flow [2022-09-16 12:05:37,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 147 transitions, 741 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:37,899 INFO L231 Difference]: Finished difference. Result has 159 places, 125 transitions, 605 flow [2022-09-16 12:05:37,899 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=605, PETRI_PLACES=159, PETRI_TRANSITIONS=125} [2022-09-16 12:05:37,900 INFO L287 CegarLoopForPetriNet]: 114 programPoint places, 45 predicate places. [2022-09-16 12:05:37,900 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 125 transitions, 605 flow [2022-09-16 12:05:37,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 86.5) internal successors, (1557), 18 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:37,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:37,900 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:37,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:38,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-09-16 12:05:38,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2017493137, now seen corresponding path program 1 times [2022-09-16 12:05:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:38,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236376240] [2022-09-16 12:05:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:38,142 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:38,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:38,169 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:38,169 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:38,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:38,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:38,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:38,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:38,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-09-16 12:05:38,170 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:38,172 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:38,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2022-09-16 12:05:38,198 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-09-16 12:05:38,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 388 flow [2022-09-16 12:05:39,753 INFO L130 PetriNetUnfolder]: 2334/11778 cut-off events. [2022-09-16 12:05:39,753 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2022-09-16 12:05:39,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14155 conditions, 11778 events. 2334/11778 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 115941 event pairs, 1291 based on Foata normal form. 0/9684 useless extension candidates. Maximal degree in co-relation 6938. Up to 2304 conditions per place. [2022-09-16 12:05:39,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 122 transitions, 388 flow [2022-09-16 12:05:39,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 114 transitions, 372 flow [2022-09-16 12:05:39,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:39,818 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:39,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:39,820 INFO L130 PetriNetUnfolder]: 2/40 cut-off events. [2022-09-16 12:05:39,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:39,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:39,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:39,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:39,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash 421168510, now seen corresponding path program 1 times [2022-09-16 12:05:39,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:39,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548437814] [2022-09-16 12:05:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:39,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:39,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548437814] [2022-09-16 12:05:39,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548437814] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:39,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:39,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:39,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236051725] [2022-09-16 12:05:39,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:39,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:39,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:39,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:39,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2022-09-16 12:05:39,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 114 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:39,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:39,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2022-09-16 12:05:39,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:40,938 INFO L130 PetriNetUnfolder]: 1801/7646 cut-off events. [2022-09-16 12:05:40,938 INFO L131 PetriNetUnfolder]: For 7068/7068 co-relation queries the response was YES. [2022-09-16 12:05:40,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12429 conditions, 7646 events. 1801/7646 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 67059 event pairs, 1291 based on Foata normal form. 9/6599 useless extension candidates. Maximal degree in co-relation 5981. Up to 2398 conditions per place. [2022-09-16 12:05:40,996 INFO L137 encePairwiseOnDemand]: 113/122 looper letters, 33 selfloop transitions, 4 changer transitions 1/118 dead transitions. [2022-09-16 12:05:40,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 454 flow [2022-09-16 12:05:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2022-09-16 12:05:40,998 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7918032786885246 [2022-09-16 12:05:40,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2022-09-16 12:05:40,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2022-09-16 12:05:40,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:40,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2022-09-16 12:05:40,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:41,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:41,005 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:41,005 INFO L175 Difference]: Start difference. First operand has 122 places, 114 transitions, 372 flow. Second operand 5 states and 483 transitions. [2022-09-16 12:05:41,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 454 flow [2022-09-16 12:05:41,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 118 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:41,009 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 396 flow [2022-09-16 12:05:41,009 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2022-09-16 12:05:41,010 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 6 predicate places. [2022-09-16 12:05:41,010 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 396 flow [2022-09-16 12:05:41,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:41,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:41,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:41,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-09-16 12:05:41,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:41,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:41,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1935228074, now seen corresponding path program 1 times [2022-09-16 12:05:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:41,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694525146] [2022-09-16 12:05:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:41,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:41,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694525146] [2022-09-16 12:05:41,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694525146] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:41,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:41,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:41,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849000483] [2022-09-16 12:05:41,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:41,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:41,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:41,031 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2022-09-16 12:05:41,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:41,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:41,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2022-09-16 12:05:41,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:42,070 INFO L130 PetriNetUnfolder]: 1801/7629 cut-off events. [2022-09-16 12:05:42,070 INFO L131 PetriNetUnfolder]: For 7083/7083 co-relation queries the response was YES. [2022-09-16 12:05:42,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12456 conditions, 7629 events. 1801/7629 cut-off events. For 7083/7083 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 66401 event pairs, 1291 based on Foata normal form. 8/6615 useless extension candidates. Maximal degree in co-relation 12390. Up to 2324 conditions per place. [2022-09-16 12:05:42,132 INFO L137 encePairwiseOnDemand]: 116/122 looper letters, 25 selfloop transitions, 8 changer transitions 0/113 dead transitions. [2022-09-16 12:05:42,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 113 transitions, 460 flow [2022-09-16 12:05:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 471 transitions. [2022-09-16 12:05:42,133 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7721311475409836 [2022-09-16 12:05:42,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 471 transitions. [2022-09-16 12:05:42,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 471 transitions. [2022-09-16 12:05:42,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:42,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 471 transitions. [2022-09-16 12:05:42,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:42,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:42,135 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:42,135 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 396 flow. Second operand 5 states and 471 transitions. [2022-09-16 12:05:42,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 113 transitions, 460 flow [2022-09-16 12:05:42,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 113 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:42,138 INFO L231 Difference]: Finished difference. Result has 130 places, 113 transitions, 414 flow [2022-09-16 12:05:42,139 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=130, PETRI_TRANSITIONS=113} [2022-09-16 12:05:42,139 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 8 predicate places. [2022-09-16 12:05:42,139 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 113 transitions, 414 flow [2022-09-16 12:05:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:42,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:42,139 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-09-16 12:05:42,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:42,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:42,140 INFO L85 PathProgramCache]: Analyzing trace with hash 137472783, now seen corresponding path program 1 times [2022-09-16 12:05:42,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:42,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642022711] [2022-09-16 12:05:42,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:42,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:42,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642022711] [2022-09-16 12:05:42,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642022711] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:42,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907512488] [2022-09-16 12:05:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:42,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:42,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:42,168 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:42,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-16 12:05:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:42,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:42,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:42,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:42,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907512488] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:42,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:42,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183406357] [2022-09-16 12:05:42,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:42,269 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2022-09-16 12:05:42,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 113 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:42,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:42,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2022-09-16 12:05:42,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:43,379 INFO L130 PetriNetUnfolder]: 1801/7621 cut-off events. [2022-09-16 12:05:43,379 INFO L131 PetriNetUnfolder]: For 7120/7120 co-relation queries the response was YES. [2022-09-16 12:05:43,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12479 conditions, 7621 events. 1801/7621 cut-off events. For 7120/7120 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 66505 event pairs, 1291 based on Foata normal form. 8/6607 useless extension candidates. Maximal degree in co-relation 6472. Up to 2348 conditions per place. [2022-09-16 12:05:43,425 INFO L137 encePairwiseOnDemand]: 117/122 looper letters, 29 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2022-09-16 12:05:43,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 115 transitions, 486 flow [2022-09-16 12:05:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2022-09-16 12:05:43,426 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7634660421545667 [2022-09-16 12:05:43,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2022-09-16 12:05:43,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2022-09-16 12:05:43,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:43,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2022-09-16 12:05:43,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:43,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:43,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:43,428 INFO L175 Difference]: Start difference. First operand has 130 places, 113 transitions, 414 flow. Second operand 7 states and 652 transitions. [2022-09-16 12:05:43,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 115 transitions, 486 flow [2022-09-16 12:05:43,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 115 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:43,431 INFO L231 Difference]: Finished difference. Result has 132 places, 112 transitions, 410 flow [2022-09-16 12:05:43,432 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2022-09-16 12:05:43,432 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 10 predicate places. [2022-09-16 12:05:43,432 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 410 flow [2022-09-16 12:05:43,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:43,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:43,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:43,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-09-16 12:05:43,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:43,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1340297462, now seen corresponding path program 1 times [2022-09-16 12:05:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079005691] [2022-09-16 12:05:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:43,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:43,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079005691] [2022-09-16 12:05:43,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079005691] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:43,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120301549] [2022-09-16 12:05:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:43,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:43,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:43,670 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:43,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-09-16 12:05:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:43,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:43,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:43,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120301549] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:43,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:43,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639460107] [2022-09-16 12:05:43,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:43,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:43,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2022-09-16 12:05:43,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 410 flow. Second operand has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:43,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:43,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2022-09-16 12:05:43,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:44,766 INFO L130 PetriNetUnfolder]: 1799/7615 cut-off events. [2022-09-16 12:05:44,766 INFO L131 PetriNetUnfolder]: For 7131/7131 co-relation queries the response was YES. [2022-09-16 12:05:44,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12462 conditions, 7615 events. 1799/7615 cut-off events. For 7131/7131 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 66822 event pairs, 1295 based on Foata normal form. 2/6595 useless extension candidates. Maximal degree in co-relation 6472. Up to 2327 conditions per place. [2022-09-16 12:05:44,844 INFO L137 encePairwiseOnDemand]: 116/122 looper letters, 34 selfloop transitions, 9 changer transitions 0/123 dead transitions. [2022-09-16 12:05:44,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 123 transitions, 534 flow [2022-09-16 12:05:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:05:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:05:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 837 transitions. [2022-09-16 12:05:44,846 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7622950819672131 [2022-09-16 12:05:44,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 837 transitions. [2022-09-16 12:05:44,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 837 transitions. [2022-09-16 12:05:44,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:44,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 837 transitions. [2022-09-16 12:05:44,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:44,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:44,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:44,849 INFO L175 Difference]: Start difference. First operand has 132 places, 112 transitions, 410 flow. Second operand 9 states and 837 transitions. [2022-09-16 12:05:44,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 123 transitions, 534 flow [2022-09-16 12:05:44,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 123 transitions, 521 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:05:44,854 INFO L231 Difference]: Finished difference. Result has 139 places, 116 transitions, 457 flow [2022-09-16 12:05:44,854 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=457, PETRI_PLACES=139, PETRI_TRANSITIONS=116} [2022-09-16 12:05:44,854 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 17 predicate places. [2022-09-16 12:05:44,854 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 116 transitions, 457 flow [2022-09-16 12:05:44,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:44,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:44,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:44,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:45,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:45,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash 222820027, now seen corresponding path program 1 times [2022-09-16 12:05:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:45,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352847000] [2022-09-16 12:05:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:05:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352847000] [2022-09-16 12:05:45,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352847000] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:45,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:45,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:45,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337952052] [2022-09-16 12:05:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:45,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:45,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2022-09-16 12:05:45,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 116 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:45,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:45,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2022-09-16 12:05:45,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:46,499 INFO L130 PetriNetUnfolder]: 1826/7840 cut-off events. [2022-09-16 12:05:46,500 INFO L131 PetriNetUnfolder]: For 2646/2646 co-relation queries the response was YES. [2022-09-16 12:05:46,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17505 conditions, 7840 events. 1826/7840 cut-off events. For 2646/2646 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 69568 event pairs, 826 based on Foata normal form. 0/6836 useless extension candidates. Maximal degree in co-relation 8889. Up to 6884 conditions per place. [2022-09-16 12:05:46,557 INFO L137 encePairwiseOnDemand]: 116/122 looper letters, 41 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-09-16 12:05:46,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 606 flow [2022-09-16 12:05:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2022-09-16 12:05:46,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7983606557377049 [2022-09-16 12:05:46,558 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2022-09-16 12:05:46,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2022-09-16 12:05:46,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:46,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2022-09-16 12:05:46,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:46,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:46,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:46,560 INFO L175 Difference]: Start difference. First operand has 139 places, 116 transitions, 457 flow. Second operand 5 states and 487 transitions. [2022-09-16 12:05:46,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 606 flow [2022-09-16 12:05:46,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 132 transitions, 592 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 12:05:46,564 INFO L231 Difference]: Finished difference. Result has 142 places, 119 transitions, 473 flow [2022-09-16 12:05:46,564 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=142, PETRI_TRANSITIONS=119} [2022-09-16 12:05:46,565 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 20 predicate places. [2022-09-16 12:05:46,565 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 119 transitions, 473 flow [2022-09-16 12:05:46,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:46,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:46,565 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:46,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-09-16 12:05:46,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:46,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1877934312, now seen corresponding path program 1 times [2022-09-16 12:05:46,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:46,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083109585] [2022-09-16 12:05:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-09-16 12:05:46,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:46,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083109585] [2022-09-16 12:05:46,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083109585] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:46,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:46,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:46,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555082775] [2022-09-16 12:05:46,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:46,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:46,588 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2022-09-16 12:05:46,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 119 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:46,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:46,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2022-09-16 12:05:46,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:47,780 INFO L130 PetriNetUnfolder]: 1826/7338 cut-off events. [2022-09-16 12:05:47,781 INFO L131 PetriNetUnfolder]: For 3315/3315 co-relation queries the response was YES. [2022-09-16 12:05:47,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18758 conditions, 7338 events. 1826/7338 cut-off events. For 3315/3315 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 62295 event pairs, 1328 based on Foata normal form. 502/7840 useless extension candidates. Maximal degree in co-relation 9450. Up to 3380 conditions per place. [2022-09-16 12:05:47,867 INFO L137 encePairwiseOnDemand]: 116/122 looper letters, 24 selfloop transitions, 8 changer transitions 0/119 dead transitions. [2022-09-16 12:05:47,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 119 transitions, 535 flow [2022-09-16 12:05:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-09-16 12:05:47,868 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7704918032786885 [2022-09-16 12:05:47,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-09-16 12:05:47,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-09-16 12:05:47,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:47,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-09-16 12:05:47,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:47,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:47,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:47,870 INFO L175 Difference]: Start difference. First operand has 142 places, 119 transitions, 473 flow. Second operand 5 states and 470 transitions. [2022-09-16 12:05:47,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 119 transitions, 535 flow [2022-09-16 12:05:47,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 119 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:47,878 INFO L231 Difference]: Finished difference. Result has 145 places, 119 transitions, 491 flow [2022-09-16 12:05:47,879 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=491, PETRI_PLACES=145, PETRI_TRANSITIONS=119} [2022-09-16 12:05:47,879 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 23 predicate places. [2022-09-16 12:05:47,880 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 119 transitions, 491 flow [2022-09-16 12:05:47,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:47,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:47,880 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:47,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-09-16 12:05:47,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:47,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:47,881 INFO L85 PathProgramCache]: Analyzing trace with hash -941552608, now seen corresponding path program 1 times [2022-09-16 12:05:47,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:47,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994495019] [2022-09-16 12:05:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:47,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:47,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:47,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994495019] [2022-09-16 12:05:47,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994495019] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:47,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023952468] [2022-09-16 12:05:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:47,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:47,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:47,930 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:47,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-09-16 12:05:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:48,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 12:05:48,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:48,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:05:48,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023952468] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:48,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:48,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 12:05:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096567254] [2022-09-16 12:05:48,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:48,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:05:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:48,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:05:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:05:48,187 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 122 [2022-09-16 12:05:48,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 119 transitions, 491 flow. Second operand has 18 states, 18 states have (on average 91.5) internal successors, (1647), 18 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:48,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:48,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 122 [2022-09-16 12:05:48,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:49,288 INFO L130 PetriNetUnfolder]: 1808/7192 cut-off events. [2022-09-16 12:05:49,288 INFO L131 PetriNetUnfolder]: For 8879/8879 co-relation queries the response was YES. [2022-09-16 12:05:49,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16841 conditions, 7192 events. 1808/7192 cut-off events. For 8879/8879 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 64239 event pairs, 1426 based on Foata normal form. 4/7196 useless extension candidates. Maximal degree in co-relation 8661. Up to 2330 conditions per place. [2022-09-16 12:05:49,367 INFO L137 encePairwiseOnDemand]: 116/122 looper letters, 50 selfloop transitions, 21 changer transitions 0/154 dead transitions. [2022-09-16 12:05:49,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 154 transitions, 795 flow [2022-09-16 12:05:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 12:05:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 12:05:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1923 transitions. [2022-09-16 12:05:49,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7505854800936768 [2022-09-16 12:05:49,369 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1923 transitions. [2022-09-16 12:05:49,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1923 transitions. [2022-09-16 12:05:49,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:49,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1923 transitions. [2022-09-16 12:05:49,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 91.57142857142857) internal successors, (1923), 21 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:49,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 122.0) internal successors, (2684), 22 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:49,374 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 122.0) internal successors, (2684), 22 states have internal predecessors, (2684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:49,374 INFO L175 Difference]: Start difference. First operand has 145 places, 119 transitions, 491 flow. Second operand 21 states and 1923 transitions. [2022-09-16 12:05:49,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 154 transitions, 795 flow [2022-09-16 12:05:49,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 154 transitions, 783 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:49,391 INFO L231 Difference]: Finished difference. Result has 167 places, 132 transitions, 643 flow [2022-09-16 12:05:49,391 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=643, PETRI_PLACES=167, PETRI_TRANSITIONS=132} [2022-09-16 12:05:49,392 INFO L287 CegarLoopForPetriNet]: 122 programPoint places, 45 predicate places. [2022-09-16 12:05:49,392 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 132 transitions, 643 flow [2022-09-16 12:05:49,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.5) internal successors, (1647), 18 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:49,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:49,392 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:49,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:49,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-09-16 12:05:49,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:49,610 INFO L85 PathProgramCache]: Analyzing trace with hash -423198697, now seen corresponding path program 1 times [2022-09-16 12:05:49,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:49,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156966531] [2022-09-16 12:05:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:49,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:49,629 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:05:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:05:49,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:05:49,651 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:05:49,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 12:05:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:05:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:05:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:05:49,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 12:05:49,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-09-16 12:05:49,652 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:49,653 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:05:49,653 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2022-09-16 12:05:49,672 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-09-16 12:05:49,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 129 transitions, 428 flow [2022-09-16 12:05:52,627 INFO L130 PetriNetUnfolder]: 5153/23836 cut-off events. [2022-09-16 12:05:52,628 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2022-09-16 12:05:52,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29042 conditions, 23836 events. 5153/23836 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 267755 event pairs, 3084 based on Foata normal form. 0/19689 useless extension candidates. Maximal degree in co-relation 14144. Up to 5120 conditions per place. [2022-09-16 12:05:52,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 129 transitions, 428 flow [2022-09-16 12:05:52,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 121 transitions, 412 flow [2022-09-16 12:05:52,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:05:52,966 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=false, 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;@5c2039aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:05:52,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 12:05:52,968 INFO L130 PetriNetUnfolder]: 2/41 cut-off events. [2022-09-16 12:05:52,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:05:52,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:52,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:52,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash -814044732, now seen corresponding path program 1 times [2022-09-16 12:05:52,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:52,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246528126] [2022-09-16 12:05:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246528126] [2022-09-16 12:05:52,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246528126] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:52,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:52,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472298624] [2022-09-16 12:05:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:52,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:52,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:52,985 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:05:52,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 412 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:52,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:52,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:05:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:54,880 INFO L130 PetriNetUnfolder]: 4106/15605 cut-off events. [2022-09-16 12:05:54,880 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-09-16 12:05:54,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26044 conditions, 15605 events. 4106/15605 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 154465 event pairs, 3084 based on Foata normal form. 10/13531 useless extension candidates. Maximal degree in co-relation 12427. Up to 5225 conditions per place. [2022-09-16 12:05:55,050 INFO L137 encePairwiseOnDemand]: 120/129 looper letters, 35 selfloop transitions, 4 changer transitions 1/125 dead transitions. [2022-09-16 12:05:55,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 498 flow [2022-09-16 12:05:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2022-09-16 12:05:55,051 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7906976744186046 [2022-09-16 12:05:55,051 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2022-09-16 12:05:55,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2022-09-16 12:05:55,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:55,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2022-09-16 12:05:55,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:55,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:55,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:55,053 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 412 flow. Second operand 5 states and 510 transitions. [2022-09-16 12:05:55,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 498 flow [2022-09-16 12:05:55,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 125 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:05:55,058 INFO L231 Difference]: Finished difference. Result has 136 places, 120 transitions, 436 flow [2022-09-16 12:05:55,059 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=136, PETRI_TRANSITIONS=120} [2022-09-16 12:05:55,059 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 6 predicate places. [2022-09-16 12:05:55,059 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 120 transitions, 436 flow [2022-09-16 12:05:55,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:55,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:55,059 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:55,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-09-16 12:05:55,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -214004511, now seen corresponding path program 1 times [2022-09-16 12:05:55,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:55,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356955911] [2022-09-16 12:05:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:55,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:05:55,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:55,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356955911] [2022-09-16 12:05:55,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356955911] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:55,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:05:55,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:05:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586876910] [2022-09-16 12:05:55,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:55,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:05:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:55,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:05:55,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:05:55,075 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:05:55,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 120 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:55,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:55,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:05:55,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:57,002 INFO L130 PetriNetUnfolder]: 4106/15586 cut-off events. [2022-09-16 12:05:57,002 INFO L131 PetriNetUnfolder]: For 15586/15586 co-relation queries the response was YES. [2022-09-16 12:05:57,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26073 conditions, 15586 events. 4106/15586 cut-off events. For 15586/15586 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 153427 event pairs, 3084 based on Foata normal form. 9/13549 useless extension candidates. Maximal degree in co-relation 26006. Up to 5142 conditions per place. [2022-09-16 12:05:57,230 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 27 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2022-09-16 12:05:57,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 120 transitions, 504 flow [2022-09-16 12:05:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:05:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:05:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 498 transitions. [2022-09-16 12:05:57,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.772093023255814 [2022-09-16 12:05:57,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 498 transitions. [2022-09-16 12:05:57,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 498 transitions. [2022-09-16 12:05:57,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:57,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 498 transitions. [2022-09-16 12:05:57,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:57,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:57,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:57,234 INFO L175 Difference]: Start difference. First operand has 136 places, 120 transitions, 436 flow. Second operand 5 states and 498 transitions. [2022-09-16 12:05:57,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 120 transitions, 504 flow [2022-09-16 12:05:57,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 120 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:05:57,239 INFO L231 Difference]: Finished difference. Result has 138 places, 120 transitions, 454 flow [2022-09-16 12:05:57,240 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=138, PETRI_TRANSITIONS=120} [2022-09-16 12:05:57,240 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 8 predicate places. [2022-09-16 12:05:57,240 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 120 transitions, 454 flow [2022-09-16 12:05:57,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:57,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:57,240 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-09-16 12:05:57,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1955795813, now seen corresponding path program 1 times [2022-09-16 12:05:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:57,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490485508] [2022-09-16 12:05:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:57,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:57,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:57,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490485508] [2022-09-16 12:05:57,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490485508] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:57,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408387469] [2022-09-16 12:05:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:57,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:57,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:57,266 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:57,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-16 12:05:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:57,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:05:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:57,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:05:57,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408387469] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:05:57,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:05:57,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:05:57,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425310191] [2022-09-16 12:05:57,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:05:57,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:05:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:05:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:05:57,390 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:05:57,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 120 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:57,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:57,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:05:57,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:05:59,360 INFO L130 PetriNetUnfolder]: 4106/15577 cut-off events. [2022-09-16 12:05:59,360 INFO L131 PetriNetUnfolder]: For 15627/15627 co-relation queries the response was YES. [2022-09-16 12:05:59,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26098 conditions, 15577 events. 4106/15577 cut-off events. For 15627/15627 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 154448 event pairs, 3084 based on Foata normal form. 9/13540 useless extension candidates. Maximal degree in co-relation 13646. Up to 5169 conditions per place. [2022-09-16 12:05:59,550 INFO L137 encePairwiseOnDemand]: 124/129 looper letters, 31 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2022-09-16 12:05:59,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 122 transitions, 530 flow [2022-09-16 12:05:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:05:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:05:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 689 transitions. [2022-09-16 12:05:59,551 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7630121816168328 [2022-09-16 12:05:59,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 689 transitions. [2022-09-16 12:05:59,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 689 transitions. [2022-09-16 12:05:59,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:05:59,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 689 transitions. [2022-09-16 12:05:59,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.42857142857143) internal successors, (689), 7 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:59,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:59,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:59,553 INFO L175 Difference]: Start difference. First operand has 138 places, 120 transitions, 454 flow. Second operand 7 states and 689 transitions. [2022-09-16 12:05:59,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 122 transitions, 530 flow [2022-09-16 12:05:59,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 122 transitions, 518 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:05:59,557 INFO L231 Difference]: Finished difference. Result has 140 places, 119 transitions, 450 flow [2022-09-16 12:05:59,557 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=140, PETRI_TRANSITIONS=119} [2022-09-16 12:05:59,557 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 10 predicate places. [2022-09-16 12:05:59,558 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 119 transitions, 450 flow [2022-09-16 12:05:59,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:59,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:05:59,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:05:59,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-09-16 12:05:59,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-09-16 12:05:59,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:05:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:05:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1688311804, now seen corresponding path program 1 times [2022-09-16 12:05:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:05:59,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924757422] [2022-09-16 12:05:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:05:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:59,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:05:59,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924757422] [2022-09-16 12:05:59,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924757422] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:05:59,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053202785] [2022-09-16 12:05:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:05:59,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:05:59,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:05:59,812 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:05:59,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-16 12:05:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:05:59,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:05:59,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:05:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:59,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:05:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:05:59,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053202785] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:05:59,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:05:59,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:05:59,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037272948] [2022-09-16 12:05:59,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:05:59,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:05:59,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:05:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:05:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:05:59,957 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:05:59,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 119 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:05:59,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:05:59,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:05:59,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:01,872 INFO L130 PetriNetUnfolder]: 4104/15571 cut-off events. [2022-09-16 12:06:01,873 INFO L131 PetriNetUnfolder]: For 15639/15639 co-relation queries the response was YES. [2022-09-16 12:06:02,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26080 conditions, 15571 events. 4104/15571 cut-off events. For 15639/15639 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 154356 event pairs, 3088 based on Foata normal form. 2/13527 useless extension candidates. Maximal degree in co-relation 13646. Up to 5146 conditions per place. [2022-09-16 12:06:02,073 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 36 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2022-09-16 12:06:02,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 130 transitions, 578 flow [2022-09-16 12:06:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:06:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:06:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 884 transitions. [2022-09-16 12:06:02,074 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7614125753660638 [2022-09-16 12:06:02,074 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 884 transitions. [2022-09-16 12:06:02,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 884 transitions. [2022-09-16 12:06:02,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:02,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 884 transitions. [2022-09-16 12:06:02,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.22222222222223) internal successors, (884), 9 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:02,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:02,077 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:02,077 INFO L175 Difference]: Start difference. First operand has 140 places, 119 transitions, 450 flow. Second operand 9 states and 884 transitions. [2022-09-16 12:06:02,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 130 transitions, 578 flow [2022-09-16 12:06:02,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 130 transitions, 565 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-09-16 12:06:02,082 INFO L231 Difference]: Finished difference. Result has 147 places, 123 transitions, 497 flow [2022-09-16 12:06:02,082 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=497, PETRI_PLACES=147, PETRI_TRANSITIONS=123} [2022-09-16 12:06:02,082 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 17 predicate places. [2022-09-16 12:06:02,083 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 123 transitions, 497 flow [2022-09-16 12:06:02,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:02,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:02,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:06:02,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-09-16 12:06:02,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:02,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:06:02,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash 435492247, now seen corresponding path program 1 times [2022-09-16 12:06:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:02,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202440159] [2022-09-16 12:06:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:06:02,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:02,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202440159] [2022-09-16 12:06:02,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202440159] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:02,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:06:02,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:06:02,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932828041] [2022-09-16 12:06:02,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:02,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:06:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:06:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:06:02,313 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:06:02,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 123 transitions, 497 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:02,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:02,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:06:02,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:04,571 INFO L130 PetriNetUnfolder]: 4139/15859 cut-off events. [2022-09-16 12:06:04,571 INFO L131 PetriNetUnfolder]: For 5548/5548 co-relation queries the response was YES. [2022-09-16 12:06:04,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35857 conditions, 15859 events. 4139/15859 cut-off events. For 5548/5548 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 158207 event pairs, 2117 based on Foata normal form. 0/13833 useless extension candidates. Maximal degree in co-relation 18381. Up to 14311 conditions per place. [2022-09-16 12:06:04,786 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 44 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2022-09-16 12:06:04,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 140 transitions, 657 flow [2022-09-16 12:06:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:06:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:06:04,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 515 transitions. [2022-09-16 12:06:04,787 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7984496124031008 [2022-09-16 12:06:04,787 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 515 transitions. [2022-09-16 12:06:04,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 515 transitions. [2022-09-16 12:06:04,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:04,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 515 transitions. [2022-09-16 12:06:04,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:04,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:04,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:04,789 INFO L175 Difference]: Start difference. First operand has 147 places, 123 transitions, 497 flow. Second operand 5 states and 515 transitions. [2022-09-16 12:06:04,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 140 transitions, 657 flow [2022-09-16 12:06:04,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 140 transitions, 643 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 12:06:04,794 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 513 flow [2022-09-16 12:06:04,794 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2022-09-16 12:06:04,794 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 20 predicate places. [2022-09-16 12:06:04,794 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 513 flow [2022-09-16 12:06:04,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:04,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:04,795 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:06:04,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-09-16 12:06:04,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:06:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1857705016, now seen corresponding path program 1 times [2022-09-16 12:06:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:04,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228844313] [2022-09-16 12:06:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-09-16 12:06:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228844313] [2022-09-16 12:06:04,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228844313] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:04,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:06:04,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:06:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370251924] [2022-09-16 12:06:04,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:04,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:06:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:06:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:06:04,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:06:04,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:04,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:04,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:06:04,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:07,237 INFO L130 PetriNetUnfolder]: 4139/14846 cut-off events. [2022-09-16 12:06:07,238 INFO L131 PetriNetUnfolder]: For 6769/6769 co-relation queries the response was YES. [2022-09-16 12:06:07,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38192 conditions, 14846 events. 4139/14846 cut-off events. For 6769/6769 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 141565 event pairs, 3130 based on Foata normal form. 1013/15859 useless extension candidates. Maximal degree in co-relation 19460. Up to 7232 conditions per place. [2022-09-16 12:06:07,389 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 26 selfloop transitions, 8 changer transitions 0/126 dead transitions. [2022-09-16 12:06:07,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 126 transitions, 579 flow [2022-09-16 12:06:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:06:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:06:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 497 transitions. [2022-09-16 12:06:07,390 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7705426356589147 [2022-09-16 12:06:07,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 497 transitions. [2022-09-16 12:06:07,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 497 transitions. [2022-09-16 12:06:07,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:07,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 497 transitions. [2022-09-16 12:06:07,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:07,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:07,391 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:07,391 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 513 flow. Second operand 5 states and 497 transitions. [2022-09-16 12:06:07,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 126 transitions, 579 flow [2022-09-16 12:06:07,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 126 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:06:07,406 INFO L231 Difference]: Finished difference. Result has 153 places, 126 transitions, 531 flow [2022-09-16 12:06:07,406 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=531, PETRI_PLACES=153, PETRI_TRANSITIONS=126} [2022-09-16 12:06:07,406 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 23 predicate places. [2022-09-16 12:06:07,406 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 126 transitions, 531 flow [2022-09-16 12:06:07,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:07,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:07,406 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:06:07,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-09-16 12:06:07,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:06:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1926000023, now seen corresponding path program 1 times [2022-09-16 12:06:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:07,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759581511] [2022-09-16 12:06:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:06:07,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759581511] [2022-09-16 12:06:07,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759581511] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:06:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479781438] [2022-09-16 12:06:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:07,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:07,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:06:07,454 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:06:07,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-09-16 12:06:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:07,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 12:06:07,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:06:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:06:07,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:06:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:06:07,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479781438] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:06:07,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:06:07,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 12:06:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579308460] [2022-09-16 12:06:07,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:06:07,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:06:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:06:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:06:07,698 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:06:07,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 126 transitions, 531 flow. Second operand has 18 states, 18 states have (on average 96.5) internal successors, (1737), 18 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:07,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:07,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:06:07,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:09,889 INFO L130 PetriNetUnfolder]: 4121/14700 cut-off events. [2022-09-16 12:06:09,889 INFO L131 PetriNetUnfolder]: For 19016/19016 co-relation queries the response was YES. [2022-09-16 12:06:10,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34720 conditions, 14700 events. 4121/14700 cut-off events. For 19016/19016 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 144267 event pairs, 3228 based on Foata normal form. 4/14704 useless extension candidates. Maximal degree in co-relation 17900. Up to 5158 conditions per place. [2022-09-16 12:06:10,096 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 52 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2022-09-16 12:06:10,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 161 transitions, 839 flow [2022-09-16 12:06:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 12:06:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 12:06:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2030 transitions. [2022-09-16 12:06:10,098 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7493540051679587 [2022-09-16 12:06:10,098 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2030 transitions. [2022-09-16 12:06:10,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2030 transitions. [2022-09-16 12:06:10,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:10,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2030 transitions. [2022-09-16 12:06:10,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.66666666666667) internal successors, (2030), 21 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:10,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 129.0) internal successors, (2838), 22 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:10,102 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 129.0) internal successors, (2838), 22 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:10,103 INFO L175 Difference]: Start difference. First operand has 153 places, 126 transitions, 531 flow. Second operand 21 states and 2030 transitions. [2022-09-16 12:06:10,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 161 transitions, 839 flow [2022-09-16 12:06:10,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 161 transitions, 827 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:06:10,132 INFO L231 Difference]: Finished difference. Result has 175 places, 139 transitions, 683 flow [2022-09-16 12:06:10,132 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=683, PETRI_PLACES=175, PETRI_TRANSITIONS=139} [2022-09-16 12:06:10,132 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 45 predicate places. [2022-09-16 12:06:10,132 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 139 transitions, 683 flow [2022-09-16 12:06:10,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 96.5) internal successors, (1737), 18 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:10,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:10,133 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:06:10,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-09-16 12:06:10,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:10,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:06:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2147122103, now seen corresponding path program 1 times [2022-09-16 12:06:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:10,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285537785] [2022-09-16 12:06:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:06:10,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:10,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285537785] [2022-09-16 12:06:10,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285537785] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:06:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778664562] [2022-09-16 12:06:10,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:10,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:06:10,457 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:06:10,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-09-16 12:06:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:10,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-16 12:06:10,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:06:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:06:10,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:06:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-09-16 12:06:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778664562] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:06:10,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:06:10,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-09-16 12:06:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035304878] [2022-09-16 12:06:10,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:06:10,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 12:06:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:10,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 12:06:10,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-09-16 12:06:10,885 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:06:10,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 139 transitions, 683 flow. Second operand has 23 states, 23 states have (on average 97.0) internal successors, (2231), 23 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:10,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:10,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:06:10,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:13,203 INFO L130 PetriNetUnfolder]: 4097/14517 cut-off events. [2022-09-16 12:06:13,203 INFO L131 PetriNetUnfolder]: For 16891/16891 co-relation queries the response was YES. [2022-09-16 12:06:13,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31263 conditions, 14517 events. 4097/14517 cut-off events. For 16891/16891 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 151017 event pairs, 4097 based on Foata normal form. 3/14520 useless extension candidates. Maximal degree in co-relation 30793. Up to 5125 conditions per place. [2022-09-16 12:06:13,385 INFO L137 encePairwiseOnDemand]: 123/129 looper letters, 64 selfloop transitions, 30 changer transitions 0/182 dead transitions. [2022-09-16 12:06:13,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 182 transitions, 1087 flow [2022-09-16 12:06:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 12:06:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 12:06:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2887 transitions. [2022-09-16 12:06:13,387 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7459948320413436 [2022-09-16 12:06:13,388 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2887 transitions. [2022-09-16 12:06:13,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2887 transitions. [2022-09-16 12:06:13,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:13,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2887 transitions. [2022-09-16 12:06:13,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 96.23333333333333) internal successors, (2887), 30 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:13,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 129.0) internal successors, (3999), 31 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:13,393 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 129.0) internal successors, (3999), 31 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:13,393 INFO L175 Difference]: Start difference. First operand has 175 places, 139 transitions, 683 flow. Second operand 30 states and 2887 transitions. [2022-09-16 12:06:13,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 182 transitions, 1087 flow [2022-09-16 12:06:13,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 182 transitions, 1025 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-09-16 12:06:13,416 INFO L231 Difference]: Finished difference. Result has 201 places, 149 transitions, 805 flow [2022-09-16 12:06:13,416 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=805, PETRI_PLACES=201, PETRI_TRANSITIONS=149} [2022-09-16 12:06:13,416 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 71 predicate places. [2022-09-16 12:06:13,416 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 149 transitions, 805 flow [2022-09-16 12:06:13,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.0) internal successors, (2231), 23 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:13,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:13,417 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:06:13,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-09-16 12:06:13,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:13,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:06:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 477094703, now seen corresponding path program 1 times [2022-09-16 12:06:13,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:13,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100845899] [2022-09-16 12:06:13,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:13,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 490 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:06:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:13,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100845899] [2022-09-16 12:06:13,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100845899] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:06:13,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070241545] [2022-09-16 12:06:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:13,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:13,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:06:13,832 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:06:13,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-09-16 12:06:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:13,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 22 conjunts are in the unsatisfiable core [2022-09-16 12:06:13,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:06:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:06:14,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:06:14,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070241545] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:14,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:06:14,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-09-16 12:06:14,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903763941] [2022-09-16 12:06:14,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 12:06:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 12:06:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-09-16 12:06:14,090 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:06:14,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 149 transitions, 805 flow. Second operand has 23 states, 23 states have (on average 96.65217391304348) internal successors, (2223), 23 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:14,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:14,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:06:14,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:16,677 INFO L130 PetriNetUnfolder]: 4097/14512 cut-off events. [2022-09-16 12:06:16,677 INFO L131 PetriNetUnfolder]: For 16809/16809 co-relation queries the response was YES. [2022-09-16 12:06:16,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31254 conditions, 14512 events. 4097/14512 cut-off events. For 16809/16809 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 150953 event pairs, 4097 based on Foata normal form. 1/14513 useless extension candidates. Maximal degree in co-relation 30780. Up to 5122 conditions per place. [2022-09-16 12:06:16,792 INFO L137 encePairwiseOnDemand]: 124/129 looper letters, 62 selfloop transitions, 31 changer transitions 0/180 dead transitions. [2022-09-16 12:06:16,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 180 transitions, 1071 flow [2022-09-16 12:06:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 12:06:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-16 12:06:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3163 transitions. [2022-09-16 12:06:16,795 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7430115104533709 [2022-09-16 12:06:16,795 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3163 transitions. [2022-09-16 12:06:16,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3163 transitions. [2022-09-16 12:06:16,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:16,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3163 transitions. [2022-09-16 12:06:16,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 95.84848484848484) internal successors, (3163), 33 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:16,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 129.0) internal successors, (4386), 34 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:16,816 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 129.0) internal successors, (4386), 34 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:16,817 INFO L175 Difference]: Start difference. First operand has 201 places, 149 transitions, 805 flow. Second operand 33 states and 3163 transitions. [2022-09-16 12:06:16,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 180 transitions, 1071 flow [2022-09-16 12:06:16,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 180 transitions, 1021 flow, removed 5 selfloop flow, removed 20 redundant places. [2022-09-16 12:06:16,833 INFO L231 Difference]: Finished difference. Result has 212 places, 147 transitions, 779 flow [2022-09-16 12:06:16,833 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=779, PETRI_PLACES=212, PETRI_TRANSITIONS=147} [2022-09-16 12:06:16,834 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 82 predicate places. [2022-09-16 12:06:16,834 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 147 transitions, 779 flow [2022-09-16 12:06:16,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 96.65217391304348) internal successors, (2223), 23 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:16,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:16,834 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:06:16,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-09-16 12:06:17,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-09-16 12:06:17,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 12:06:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:17,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1437920675, now seen corresponding path program 1 times [2022-09-16 12:06:17,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:17,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125691981] [2022-09-16 12:06:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:17,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-09-16 12:06:17,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:17,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125691981] [2022-09-16 12:06:17,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125691981] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:06:17,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023210949] [2022-09-16 12:06:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:17,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:17,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:06:17,094 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:06:17,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-09-16 12:06:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:17,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:06:17,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:06:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-09-16 12:06:17,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:06:17,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023210949] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:17,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:06:17,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:06:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945271097] [2022-09-16 12:06:17,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:17,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:06:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:06:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:06:17,260 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2022-09-16 12:06:17,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 147 transitions, 779 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:17,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:17,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2022-09-16 12:06:17,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:19,608 INFO L130 PetriNetUnfolder]: 4097/13499 cut-off events. [2022-09-16 12:06:19,609 INFO L131 PetriNetUnfolder]: For 7144/7144 co-relation queries the response was YES. [2022-09-16 12:06:19,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35815 conditions, 13499 events. 4097/13499 cut-off events. For 7144/7144 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 135541 event pairs, 3084 based on Foata normal form. 1013/14512 useless extension candidates. Maximal degree in co-relation 35404. Up to 8179 conditions per place. [2022-09-16 12:06:19,719 INFO L137 encePairwiseOnDemand]: 124/129 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2022-09-16 12:06:19,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 159 transitions, 921 flow [2022-09-16 12:06:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:06:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:06:19,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 698 transitions. [2022-09-16 12:06:19,720 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7729789590254706 [2022-09-16 12:06:19,720 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 698 transitions. [2022-09-16 12:06:19,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 698 transitions. [2022-09-16 12:06:19,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:19,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 698 transitions. [2022-09-16 12:06:19,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:19,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:19,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:19,722 INFO L175 Difference]: Start difference. First operand has 212 places, 147 transitions, 779 flow. Second operand 7 states and 698 transitions. [2022-09-16 12:06:19,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 159 transitions, 921 flow [2022-09-16 12:06:19,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 159 transitions, 790 flow, removed 2 selfloop flow, removed 34 redundant places. [2022-09-16 12:06:19,746 INFO L231 Difference]: Finished difference. Result has 183 places, 0 transitions, 0 flow [2022-09-16 12:06:19,746 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=183, PETRI_TRANSITIONS=0} [2022-09-16 12:06:19,746 INFO L287 CegarLoopForPetriNet]: 130 programPoint places, 53 predicate places. [2022-09-16 12:06:19,747 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 0 transitions, 0 flow [2022-09-16 12:06:19,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:19,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2022-09-16 12:06:19,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 12:06:19,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 12:06:19,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 12:06:19,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-09-16 12:06:19,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-09-16 12:06:19,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-09-16 12:06:19,948 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:06:19,950 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 10 thread instances [2022-09-16 12:06:19,950 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:06:19,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:06:19 BasicIcfg [2022-09-16 12:06:19,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:06:19,957 INFO L158 Benchmark]: Toolchain (without parser) took 63703.58ms. Allocated memory was 187.7MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 164.0MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2022-09-16 12:06:19,957 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:06:19,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.79ms. Allocated memory is still 187.7MB. Free memory was 163.8MB in the beginning and 154.0MB in the end (delta: 9.9MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2022-09-16 12:06:19,958 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.00ms. Allocated memory is still 187.7MB. Free memory was 154.0MB in the beginning and 152.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:06:19,958 INFO L158 Benchmark]: Boogie Preprocessor took 35.40ms. Allocated memory is still 187.7MB. Free memory was 152.0MB in the beginning and 150.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 12:06:19,958 INFO L158 Benchmark]: RCFGBuilder took 390.14ms. Allocated memory is still 187.7MB. Free memory was 150.6MB in the beginning and 138.9MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-09-16 12:06:19,958 INFO L158 Benchmark]: TraceAbstraction took 62718.30ms. Allocated memory was 187.7MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 138.2MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-09-16 12:06:19,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 187.7MB. Free memory is still 147.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 496.79ms. Allocated memory is still 187.7MB. Free memory was 163.8MB in the beginning and 154.0MB in the end (delta: 9.9MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.00ms. Allocated memory is still 187.7MB. Free memory was 154.0MB in the beginning and 152.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.40ms. Allocated memory is still 187.7MB. Free memory was 152.0MB in the beginning and 150.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 390.14ms. Allocated memory is still 187.7MB. Free memory was 150.6MB in the beginning and 138.9MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 62718.30ms. Allocated memory was 187.7MB in the beginning and 3.6GB in the end (delta: 3.5GB). Free memory was 138.2MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 729]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 723]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 729]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 723]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 69 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 75 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 17 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=2, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 485 SizeOfPredicates, 5 NumberOfNonLiveVariables, 211 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 19/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 81 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 59 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 18 mSDtfsCounter, 178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 307 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 485 SizeOfPredicates, 5 NumberOfNonLiveVariables, 211 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 19/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 87 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 23 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 354 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 5 NumberOfNonLiveVariables, 211 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 58/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 93 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 359 IncrementalHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 26 mSDtfsCounter, 359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=6, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 485 NumberOfCodeBlocks, 485 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 679 SizeOfPredicates, 5 NumberOfNonLiveVariables, 211 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 102/115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 6 thread instances CFG has 8 procedures, 99 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 147 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 496 IncrementalHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 29 mSDtfsCounter, 496 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=6, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 667 NumberOfCodeBlocks, 667 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 1143 SizeOfPredicates, 11 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 120/250 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 7 thread instances CFG has 9 procedures, 105 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 214 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 597 IncrementalHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 30 mSDtfsCounter, 597 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=7, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 679 NumberOfCodeBlocks, 679 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 1153 SizeOfPredicates, 11 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 120/250 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 8 thread instances CFG has 10 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 231 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 618 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 30 mSDtfsCounter, 618 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=605occurred in iteration=7, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 691 NumberOfCodeBlocks, 691 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 1173 SizeOfPredicates, 11 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 120/250 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 9 thread instances CFG has 11 procedures, 117 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.5s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 201 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 201 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 274 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 740 IncrementalHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 30 mSDtfsCounter, 740 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=7, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 703 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 689 ConstructedInterpolants, 0 QuantifiedInterpolants, 1163 SizeOfPredicates, 11 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 120/250 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 10 thread instances CFG has 12 procedures, 123 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.3s, OverallIterations: 10, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 23.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 380 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 380 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 497 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1622 IncrementalHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 50 mSDtfsCounter, 1622 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1017 GetRequests, 854 SyntacticMatches, 11 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=805occurred in iteration=8, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1464 NumberOfCodeBlocks, 1464 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1709 ConstructedInterpolants, 0 QuantifiedInterpolants, 3281 SizeOfPredicates, 48 NumberOfNonLiveVariables, 1332 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 2324/3337 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 12:06:20,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...