/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/fib_safe-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:26:46,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:26:46,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:26:46,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:26:46,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:26:46,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:26:46,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:26:46,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:26:46,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:26:46,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:26:46,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:26:46,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:26:46,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:26:46,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:26:46,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:26:46,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:26:46,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:26:46,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:26:46,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:26:46,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:26:46,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:26:46,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:26:46,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:26:46,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:26:46,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:26:46,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:26:46,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:26:46,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:26:46,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:26:46,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:26:46,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:26:46,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:26:46,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:26:46,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:26:46,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:26:46,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:26:46,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:26:46,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:26:46,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:26:46,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:26:46,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:26:46,175 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 11:26:46,204 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:26:46,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:26:46,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:26:46,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:26:46,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:26:46,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:26:46,207 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:26:46,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:26:46,207 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:26:46,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:26:46,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:26:46,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:26:46,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:26:46,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:26:46,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:26:46,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:26:46,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:26:46,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:26:46,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:26:46,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:26:46,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:26:46,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:26:46,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:26:46,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:46,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:26:46,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:26:46,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:26:46,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:26:46,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:26:46,211 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:26:46,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:26:46,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:26:46,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:26:46,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:26:46,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:26:46,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:26:46,472 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:26:46,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-5.i [2022-09-16 11:26:46,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaac2dd02/c1575ef1d216449cbfb8042c2a6a7f77/FLAG0e2a4dfc2 [2022-09-16 11:26:46,964 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:26:46,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-5.i [2022-09-16 11:26:46,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaac2dd02/c1575ef1d216449cbfb8042c2a6a7f77/FLAG0e2a4dfc2 [2022-09-16 11:26:46,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaac2dd02/c1575ef1d216449cbfb8042c2a6a7f77 [2022-09-16 11:26:46,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:26:46,989 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:26:46,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:46,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:26:46,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:26:46,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:46" (1/1) ... [2022-09-16 11:26:46,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bea7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:46, skipping insertion in model container [2022-09-16 11:26:46,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:46" (1/1) ... [2022-09-16 11:26:47,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:26:47,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:26:47,334 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/fib_safe-5.i[30813,30826] [2022-09-16 11:26:47,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,344 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:26:47,403 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/fib_safe-5.i[30813,30826] [2022-09-16 11:26:47,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,442 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:26:47,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47 WrapperNode [2022-09-16 11:26:47,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:47,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:26:47,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:26:47,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,501 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-09-16 11:26:47,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:26:47,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:26:47,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:26:47,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:26:47,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:26:47,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (1/1) ... [2022-09-16 11:26:47,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:47,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:47,560 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 11:26:47,563 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 11:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:26:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:26:47,589 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:26:47,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:26:47,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:26:47,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:26:47,591 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 11:26:47,718 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:26:47,719 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:26:47,940 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:26:47,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:26:47,960 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:26:47,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:47 BoogieIcfgContainer [2022-09-16 11:26:47,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:26:47,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:26:47,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:26:47,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:26:47,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:26:46" (1/3) ... [2022-09-16 11:26:47,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a329bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:26:47, skipping insertion in model container [2022-09-16 11:26:47,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47" (2/3) ... [2022-09-16 11:26:47,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a329bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:26:47, skipping insertion in model container [2022-09-16 11:26:47,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:47" (3/3) ... [2022-09-16 11:26:47,975 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2022-09-16 11:26:47,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:26:47,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:26:47,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:26:48,053 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:26:48,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:48,142 INFO L130 PetriNetUnfolder]: 7/113 cut-off events. [2022-09-16 11:26:48,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:48,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 7/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-09-16 11:26:48,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:48,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 113 transitions, 232 flow [2022-09-16 11:26:48,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:26:48,168 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;@401f3599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:26:48,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-09-16 11:26:48,177 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-09-16 11:26:48,177 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:48,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:48,178 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] [2022-09-16 11:26:48,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:48,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2090278822, now seen corresponding path program 1 times [2022-09-16 11:26:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:48,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553841738] [2022-09-16 11:26:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,457 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 11:26:48,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:48,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553841738] [2022-09-16 11:26:48,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553841738] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:48,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:48,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234015233] [2022-09-16 11:26:48,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:48,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:48,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:48,500 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:48,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 232 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 11:26:48,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:48,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:48,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:48,752 INFO L130 PetriNetUnfolder]: 131/521 cut-off events. [2022-09-16 11:26:48,752 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:26:48,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 521 events. 131/521 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2951 event pairs, 70 based on Foata normal form. 86/422 useless extension candidates. Maximal degree in co-relation 690. Up to 127 conditions per place. [2022-09-16 11:26:48,765 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 22 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2022-09-16 11:26:48,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2022-09-16 11:26:48,780 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9282608695652174 [2022-09-16 11:26:48,781 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:48,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:48,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:48,796 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:48,798 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 232 flow. Second operand 4 states and 427 transitions. [2022-09-16 11:26:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:48,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:26:48,805 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:48,807 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2022-09-16 11:26:48,811 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 1 predicate places. [2022-09-16 11:26:48,811 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:48,812 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 11:26:48,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:48,812 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] [2022-09-16 11:26:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:26:48,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:48,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1286757501, now seen corresponding path program 1 times [2022-09-16 11:26:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:48,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988962213] [2022-09-16 11:26:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,882 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 11:26:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988962213] [2022-09-16 11:26:48,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988962213] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:48,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:48,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:48,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588750893] [2022-09-16 11:26:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:48,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:48,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:48,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:48,887 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:48,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 251 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 11:26:48,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:48,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:49,010 INFO L130 PetriNetUnfolder]: 109/309 cut-off events. [2022-09-16 11:26:49,012 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-09-16 11:26:49,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 309 events. 109/309 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1533 event pairs, 13 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 614. Up to 109 conditions per place. [2022-09-16 11:26:49,023 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 32 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2022-09-16 11:26:49,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2022-09-16 11:26:49,033 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8730434782608696 [2022-09-16 11:26:49,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:49,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2022-09-16 11:26:49,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,039 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 11:26:49,039 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 11:26:49,039 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 251 flow. Second operand 5 states and 502 transitions. [2022-09-16 11:26:49,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:49,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 127 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:26:49,046 INFO L231 Difference]: Finished difference. Result has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:49,046 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=114, 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=283, PETRI_PLACES=121, PETRI_TRANSITIONS=114} [2022-09-16 11:26:49,047 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 8 predicate places. [2022-09-16 11:26:49,047 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:49,047 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 11:26:49,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:49,048 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:49,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:26:49,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232894, now seen corresponding path program 1 times [2022-09-16 11:26:49,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:49,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005538735] [2022-09-16 11:26:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:49,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:49,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005538735] [2022-09-16 11:26:49,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005538735] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:49,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174909130] [2022-09-16 11:26:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:49,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:49,156 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 11:26:49,164 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 11:26:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:49,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:49,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:49,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174909130] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:49,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:49,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-09-16 11:26:49,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167182730] [2022-09-16 11:26:49,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:49,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:26:49,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:49,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:26:49,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:26:49,529 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:49,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 114 transitions, 283 flow. Second operand has 11 states, 11 states have (on average 97.54545454545455) internal successors, (1073), 11 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:49,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:49,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:49,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,032 INFO L130 PetriNetUnfolder]: 381/1587 cut-off events. [2022-09-16 11:26:50,032 INFO L131 PetriNetUnfolder]: For 233/254 co-relation queries the response was YES. [2022-09-16 11:26:50,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 1587 events. 381/1587 cut-off events. For 233/254 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13508 event pairs, 36 based on Foata normal form. 0/1209 useless extension candidates. Maximal degree in co-relation 2839. Up to 364 conditions per place. [2022-09-16 11:26:50,054 INFO L137 encePairwiseOnDemand]: 105/115 looper letters, 65 selfloop transitions, 41 changer transitions 0/203 dead transitions. [2022-09-16 11:26:50,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:26:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:26:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1853 transitions. [2022-09-16 11:26:50,059 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8951690821256039 [2022-09-16 11:26:50,060 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:50,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1853 transitions. [2022-09-16 11:26:50,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.94444444444444) internal successors, (1853), 18 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 115.0) internal successors, (2185), 19 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,072 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 115.0) internal successors, (2185), 19 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,072 INFO L175 Difference]: Start difference. First operand has 121 places, 114 transitions, 283 flow. Second operand 18 states and 1853 transitions. [2022-09-16 11:26:50,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:50,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 203 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:50,081 INFO L231 Difference]: Finished difference. Result has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:50,081 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=675, PETRI_PLACES=152, PETRI_TRANSITIONS=155} [2022-09-16 11:26:50,083 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:50,083 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:50,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 97.54545454545455) internal successors, (1073), 11 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:50,084 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:50,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:26:50,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:50,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:50,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232893, now seen corresponding path program 1 times [2022-09-16 11:26:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440420087] [2022-09-16 11:26:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:50,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440420087] [2022-09-16 11:26:50,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440420087] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:50,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353659649] [2022-09-16 11:26:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:50,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:50,383 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 11:26:50,414 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 11:26:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:50,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:50,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:50,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353659649] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:50,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:50,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-09-16 11:26:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388498384] [2022-09-16 11:26:50,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:50,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:50,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:50,539 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:50,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 155 transitions, 675 flow. Second operand has 5 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 11:26:50,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:50,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:50,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,711 INFO L130 PetriNetUnfolder]: 176/898 cut-off events. [2022-09-16 11:26:50,713 INFO L131 PetriNetUnfolder]: For 4689/4899 co-relation queries the response was YES. [2022-09-16 11:26:50,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 898 events. 176/898 cut-off events. For 4689/4899 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6708 event pairs, 50 based on Foata normal form. 208/984 useless extension candidates. Maximal degree in co-relation 2458. Up to 157 conditions per place. [2022-09-16 11:26:50,753 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 25 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2022-09-16 11:26:50,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-09-16 11:26:50,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8747826086956522 [2022-09-16 11:26:50,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-09-16 11:26:50,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-09-16 11:26:50,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:50,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-09-16 11:26:50,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:50,760 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 11:26:50,760 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 11:26:50,760 INFO L175 Difference]: Start difference. First operand has 152 places, 155 transitions, 675 flow. Second operand 5 states and 503 transitions. [2022-09-16 11:26:50,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:50,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 529 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-09-16 11:26:50,776 INFO L231 Difference]: Finished difference. Result has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:50,776 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=468, PETRI_PLACES=138, PETRI_TRANSITIONS=131} [2022-09-16 11:26:50,777 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 25 predicate places. [2022-09-16 11:26:50,778 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:50,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 11:26:50,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:50,778 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] [2022-09-16 11:26:50,807 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 11:26:51,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-09-16 11:26:51,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,004 INFO L85 PathProgramCache]: Analyzing trace with hash -447258493, now seen corresponding path program 1 times [2022-09-16 11:26:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279807257] [2022-09-16 11:26:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,095 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 11:26:51,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279807257] [2022-09-16 11:26:51,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279807257] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:51,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821524381] [2022-09-16 11:26:51,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:51,098 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:51,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 131 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:51,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,269 INFO L130 PetriNetUnfolder]: 168/722 cut-off events. [2022-09-16 11:26:51,269 INFO L131 PetriNetUnfolder]: For 1848/1962 co-relation queries the response was YES. [2022-09-16 11:26:51,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 722 events. 168/722 cut-off events. For 1848/1962 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4607 event pairs, 37 based on Foata normal form. 17/672 useless extension candidates. Maximal degree in co-relation 1991. Up to 196 conditions per place. [2022-09-16 11:26:51,290 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 62 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2022-09-16 11:26:51,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-09-16 11:26:51,293 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8573913043478261 [2022-09-16 11:26:51,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-09-16 11:26:51,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,296 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 11:26:51,296 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 11:26:51,296 INFO L175 Difference]: Start difference. First operand has 138 places, 131 transitions, 468 flow. Second operand 5 states and 493 transitions. [2022-09-16 11:26:51,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:51,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 160 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:26:51,303 INFO L231 Difference]: Finished difference. Result has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:51,303 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=143, PETRI_TRANSITIONS=134} [2022-09-16 11:26:51,306 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 30 predicate places. [2022-09-16 11:26:51,306 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:51,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,307 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:26:51,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:51,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1353304293, now seen corresponding path program 1 times [2022-09-16 11:26:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640365669] [2022-09-16 11:26:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:26:51,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640365669] [2022-09-16 11:26:51,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640365669] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:51,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:51,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945894045] [2022-09-16 11:26:51,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:51,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:51,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:51,381 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:51,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 134 transitions, 497 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:51,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,537 INFO L130 PetriNetUnfolder]: 189/682 cut-off events. [2022-09-16 11:26:51,537 INFO L131 PetriNetUnfolder]: For 1854/2009 co-relation queries the response was YES. [2022-09-16 11:26:51,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 682 events. 189/682 cut-off events. For 1854/2009 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4465 event pairs, 31 based on Foata normal form. 33/662 useless extension candidates. Maximal degree in co-relation 2118. Up to 142 conditions per place. [2022-09-16 11:26:51,556 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/161 dead transitions. [2022-09-16 11:26:51,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2022-09-16 11:26:51,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8469565217391304 [2022-09-16 11:26:51,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2022-09-16 11:26:51,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2022-09-16 11:26:51,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2022-09-16 11:26:51,560 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 11:26:51,561 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 11:26:51,562 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 11:26:51,562 INFO L175 Difference]: Start difference. First operand has 143 places, 134 transitions, 497 flow. Second operand 5 states and 487 transitions. [2022-09-16 11:26:51,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:51,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 161 transitions, 843 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:51,569 INFO L231 Difference]: Finished difference. Result has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:51,569 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=515, PETRI_PLACES=146, PETRI_TRANSITIONS=134} [2022-09-16 11:26:51,571 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 33 predicate places. [2022-09-16 11:26:51,572 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:51,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,572 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 11:26:51,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:26:51,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2117796030, now seen corresponding path program 1 times [2022-09-16 11:26:51,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837585369] [2022-09-16 11:26:51,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,662 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 11:26:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837585369] [2022-09-16 11:26:51,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837585369] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:51,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306093367] [2022-09-16 11:26:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:51,664 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 115 [2022-09-16 11:26:51,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 134 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:51,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 115 [2022-09-16 11:26:51,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,107 INFO L130 PetriNetUnfolder]: 713/2548 cut-off events. [2022-09-16 11:26:52,108 INFO L131 PetriNetUnfolder]: For 6530/6901 co-relation queries the response was YES. [2022-09-16 11:26:52,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 2548 events. 713/2548 cut-off events. For 6530/6901 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22138 event pairs, 111 based on Foata normal form. 36/2333 useless extension candidates. Maximal degree in co-relation 7236. Up to 593 conditions per place. [2022-09-16 11:26:52,161 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 86 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-09-16 11:26:52,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2022-09-16 11:26:52,164 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8739130434782608 [2022-09-16 11:26:52,164 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2022-09-16 11:26:52,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2022-09-16 11:26:52,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2022-09-16 11:26:52,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 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 11:26:52,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,169 INFO L175 Difference]: Start difference. First operand has 146 places, 134 transitions, 515 flow. Second operand 4 states and 402 transitions. [2022-09-16 11:26:52,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:52,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 188 transitions, 1063 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:52,181 INFO L231 Difference]: Finished difference. Result has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:52,182 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=148, PETRI_TRANSITIONS=136} [2022-09-16 11:26:52,182 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 35 predicate places. [2022-09-16 11:26:52,182 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:52,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:26:52,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:26:52,183 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash -997239562, now seen corresponding path program 1 times [2022-09-16 11:26:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092406866] [2022-09-16 11:26:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092406866] [2022-09-16 11:26:52,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092406866] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:52,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692922603] [2022-09-16 11:26:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:52,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:52,246 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 11:26:52,247 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 11:26:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:26:52,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:52,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:52,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692922603] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:52,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:26:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011133161] [2022-09-16 11:26:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:26:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:26:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:52,368 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 136 transitions, 529 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,563 INFO L130 PetriNetUnfolder]: 176/686 cut-off events. [2022-09-16 11:26:52,563 INFO L131 PetriNetUnfolder]: For 1808/1945 co-relation queries the response was YES. [2022-09-16 11:26:52,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 686 events. 176/686 cut-off events. For 1808/1945 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4481 event pairs, 27 based on Foata normal form. 23/665 useless extension candidates. Maximal degree in co-relation 2101. Up to 136 conditions per place. [2022-09-16 11:26:52,589 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 62 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2022-09-16 11:26:52,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:26:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:26:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2022-09-16 11:26:52,592 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84472049689441 [2022-09-16 11:26:52,592 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2022-09-16 11:26:52,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2022-09-16 11:26:52,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2022-09-16 11:26:52,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,597 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 11:26:52,598 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 11:26:52,598 INFO L175 Difference]: Start difference. First operand has 148 places, 136 transitions, 529 flow. Second operand 7 states and 680 transitions. [2022-09-16 11:26:52,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:52,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 164 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:52,606 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:52,607 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2022-09-16 11:26:52,609 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:52,609 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:52,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:52,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,610 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:26:52,638 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 11:26:52,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:52,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash 966995920, now seen corresponding path program 1 times [2022-09-16 11:26:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186651436] [2022-09-16 11:26:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:26:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186651436] [2022-09-16 11:26:52,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186651436] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:52,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747788021] [2022-09-16 11:26:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:52,871 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 535 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 11:26:52,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:53,043 INFO L130 PetriNetUnfolder]: 155/627 cut-off events. [2022-09-16 11:26:53,043 INFO L131 PetriNetUnfolder]: For 1733/1846 co-relation queries the response was YES. [2022-09-16 11:26:53,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 627 events. 155/627 cut-off events. For 1733/1846 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3783 event pairs, 24 based on Foata normal form. 32/627 useless extension candidates. Maximal degree in co-relation 1908. Up to 133 conditions per place. [2022-09-16 11:26:53,067 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2022-09-16 11:26:53,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2022-09-16 11:26:53,069 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8417391304347827 [2022-09-16 11:26:53,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2022-09-16 11:26:53,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2022-09-16 11:26:53,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:53,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2022-09-16 11:26:53,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 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 11:26:53,072 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 11:26:53,072 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 11:26:53,072 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 535 flow. Second operand 5 states and 484 transitions. [2022-09-16 11:26:53,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:53,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 162 transitions, 863 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:26:53,080 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:53,080 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=544, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2022-09-16 11:26:53,081 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 38 predicate places. [2022-09-16 11:26:53,081 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:53,081 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 11:26:53,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:53,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:26:53,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:26:53,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:53,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:53,082 INFO L85 PathProgramCache]: Analyzing trace with hash -87897220, now seen corresponding path program 1 times [2022-09-16 11:26:53,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:53,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921397109] [2022-09-16 11:26:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:53,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921397109] [2022-09-16 11:26:53,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921397109] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:53,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912763122] [2022-09-16 11:26:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:53,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:53,128 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 11:26:53,155 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 11:26:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:53,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:53,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:53,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912763122] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:53,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:53,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:26:53,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973885135] [2022-09-16 11:26:53,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:53,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:53,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:53,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:26:53,246 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:53,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:53,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:53,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:53,389 INFO L130 PetriNetUnfolder]: 148/621 cut-off events. [2022-09-16 11:26:53,389 INFO L131 PetriNetUnfolder]: For 1731/1863 co-relation queries the response was YES. [2022-09-16 11:26:53,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 621 events. 148/621 cut-off events. For 1731/1863 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3726 event pairs, 29 based on Foata normal form. 23/602 useless extension candidates. Maximal degree in co-relation 1924. Up to 150 conditions per place. [2022-09-16 11:26:53,414 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 43 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2022-09-16 11:26:53,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:53,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:53,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2022-09-16 11:26:53,416 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.841304347826087 [2022-09-16 11:26:53,416 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2022-09-16 11:26:53,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2022-09-16 11:26:53,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:53,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2022-09-16 11:26:53,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 11:26:53,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,419 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 544 flow. Second operand 4 states and 387 transitions. [2022-09-16 11:26:53,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:53,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 143 transitions, 693 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:53,426 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:53,426 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=538, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2022-09-16 11:26:53,427 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 37 predicate places. [2022-09-16 11:26:53,427 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:53,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:53,427 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, 1, 1, 1, 1, 1, 1] [2022-09-16 11:26:53,456 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 11:26:53,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:53,653 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1641089002, now seen corresponding path program 1 times [2022-09-16 11:26:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:53,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500267272] [2022-09-16 11:26:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,692 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 11:26:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:53,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500267272] [2022-09-16 11:26:53,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500267272] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:53,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:53,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:53,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944933593] [2022-09-16 11:26:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:53,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:53,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:53,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:53,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:53,697 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:53,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 538 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:53,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:53,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:53,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:54,058 INFO L130 PetriNetUnfolder]: 844/2484 cut-off events. [2022-09-16 11:26:54,058 INFO L131 PetriNetUnfolder]: For 6940/7316 co-relation queries the response was YES. [2022-09-16 11:26:54,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7560 conditions, 2484 events. 844/2484 cut-off events. For 6940/7316 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 20006 event pairs, 86 based on Foata normal form. 12/2250 useless extension candidates. Maximal degree in co-relation 7490. Up to 664 conditions per place. [2022-09-16 11:26:54,098 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 112 selfloop transitions, 4 changer transitions 0/212 dead transitions. [2022-09-16 11:26:54,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-09-16 11:26:54,100 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8539130434782609 [2022-09-16 11:26:54,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-09-16 11:26:54,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-09-16 11:26:54,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:54,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-09-16 11:26:54,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,103 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 11:26:54,104 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 11:26:54,104 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 538 flow. Second operand 5 states and 491 transitions. [2022-09-16 11:26:54,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:54,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 212 transitions, 1324 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:54,116 INFO L231 Difference]: Finished difference. Result has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:54,117 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=154, PETRI_TRANSITIONS=137} [2022-09-16 11:26:54,117 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 41 predicate places. [2022-09-16 11:26:54,118 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:54,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:54,118 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-09-16 11:26:54,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:26:54,118 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1948310297, now seen corresponding path program 1 times [2022-09-16 11:26:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:54,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858014768] [2022-09-16 11:26:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:54,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858014768] [2022-09-16 11:26:54,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858014768] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:54,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335469322] [2022-09-16 11:26:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:54,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:54,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:54,210 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 11:26:54,211 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 11:26:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:54,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:54,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:54,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:54,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335469322] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:54,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:54,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:54,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447901534] [2022-09-16 11:26:54,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:54,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:54,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:54,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:54,568 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:54,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 137 transitions, 560 flow. Second operand has 17 states, 17 states have (on average 94.94117647058823) internal successors, (1614), 17 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:54,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:54,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:55,357 INFO L130 PetriNetUnfolder]: 1218/4083 cut-off events. [2022-09-16 11:26:55,357 INFO L131 PetriNetUnfolder]: For 9443/9990 co-relation queries the response was YES. [2022-09-16 11:26:55,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11304 conditions, 4083 events. 1218/4083 cut-off events. For 9443/9990 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 36860 event pairs, 80 based on Foata normal form. 78/3901 useless extension candidates. Maximal degree in co-relation 11229. Up to 690 conditions per place. [2022-09-16 11:26:55,419 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 211 selfloop transitions, 11 changer transitions 0/320 dead transitions. [2022-09-16 11:26:55,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:26:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:26:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1071 transitions. [2022-09-16 11:26:55,426 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8466403162055336 [2022-09-16 11:26:55,426 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1071 transitions. [2022-09-16 11:26:55,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1071 transitions. [2022-09-16 11:26:55,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:55,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1071 transitions. [2022-09-16 11:26:55,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 97.36363636363636) internal successors, (1071), 11 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:55,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:55,432 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:55,432 INFO L175 Difference]: Start difference. First operand has 154 places, 137 transitions, 560 flow. Second operand 11 states and 1071 transitions. [2022-09-16 11:26:55,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:55,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 320 transitions, 2328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:26:55,446 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:55,447 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=615, PETRI_PLACES=167, PETRI_TRANSITIONS=142} [2022-09-16 11:26:55,447 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 54 predicate places. [2022-09-16 11:26:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 94.94117647058823) internal successors, (1614), 17 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:55,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:55,448 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2022-09-16 11:26:55,477 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 11:26:55,674 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,SelfDestructingSolverStorable11 [2022-09-16 11:26:55,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash 268077310, now seen corresponding path program 1 times [2022-09-16 11:26:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:55,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258791952] [2022-09-16 11:26:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:55,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:55,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258791952] [2022-09-16 11:26:55,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258791952] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:55,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247419361] [2022-09-16 11:26:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:55,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:55,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:55,787 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 11:26:55,788 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 11:26:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:55,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:55,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:56,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:56,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247419361] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:56,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:56,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-09-16 11:26:56,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837801877] [2022-09-16 11:26:56,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:56,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:26:56,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:56,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:26:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:26:56,027 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:56,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 142 transitions, 615 flow. Second operand has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:56,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:56,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:56,799 INFO L130 PetriNetUnfolder]: 1071/3807 cut-off events. [2022-09-16 11:26:56,799 INFO L131 PetriNetUnfolder]: For 8653/9131 co-relation queries the response was YES. [2022-09-16 11:26:56,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 3807 events. 1071/3807 cut-off events. For 8653/9131 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 34093 event pairs, 56 based on Foata normal form. 100/3662 useless extension candidates. Maximal degree in co-relation 10582. Up to 1302 conditions per place. [2022-09-16 11:26:56,857 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 90 selfloop transitions, 4 changer transitions 0/192 dead transitions. [2022-09-16 11:26:56,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:26:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:26:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2022-09-16 11:26:56,859 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8420289855072464 [2022-09-16 11:26:56,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2022-09-16 11:26:56,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2022-09-16 11:26:56,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:56,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2022-09-16 11:26:56,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.83333333333333) internal successors, (581), 6 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,863 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 615 flow. Second operand 6 states and 581 transitions. [2022-09-16 11:26:56,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:56,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 192 transitions, 1163 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-09-16 11:26:56,878 INFO L231 Difference]: Finished difference. Result has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:56,879 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=168, PETRI_TRANSITIONS=142} [2022-09-16 11:26:56,880 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 55 predicate places. [2022-09-16 11:26:56,880 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:56,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:56,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:56,880 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:26:56,910 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 11:26:57,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:57,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:57,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354715, now seen corresponding path program 1 times [2022-09-16 11:26:57,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:57,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044638188] [2022-09-16 11:26:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:57,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:57,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044638188] [2022-09-16 11:26:57,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044638188] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:57,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975149783] [2022-09-16 11:26:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:57,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:57,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:57,245 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 11:26:57,267 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 11:26:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:57,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:57,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:57,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:26:57,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975149783] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:57,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:57,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:57,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352133944] [2022-09-16 11:26:57,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:57,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:57,576 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:57,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 142 transitions, 613 flow. Second operand has 17 states, 17 states have (on average 97.52941176470588) internal successors, (1658), 17 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:57,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:57,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:57,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:58,886 INFO L130 PetriNetUnfolder]: 1030/4727 cut-off events. [2022-09-16 11:26:58,886 INFO L131 PetriNetUnfolder]: For 21394/22087 co-relation queries the response was YES. [2022-09-16 11:26:58,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13491 conditions, 4727 events. 1030/4727 cut-off events. For 21394/22087 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 51928 event pairs, 49 based on Foata normal form. 568/4906 useless extension candidates. Maximal degree in co-relation 13408. Up to 641 conditions per place. [2022-09-16 11:26:58,946 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 74 selfloop transitions, 58 changer transitions 0/240 dead transitions. [2022-09-16 11:26:58,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-16 11:26:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-16 11:26:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2733 transitions. [2022-09-16 11:26:58,955 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8801932367149758 [2022-09-16 11:26:58,955 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2733 transitions. [2022-09-16 11:26:58,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2733 transitions. [2022-09-16 11:26:58,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:58,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2733 transitions. [2022-09-16 11:26:58,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 101.22222222222223) internal successors, (2733), 27 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:58,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 115.0) internal successors, (3220), 28 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:58,975 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 115.0) internal successors, (3220), 28 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:58,975 INFO L175 Difference]: Start difference. First operand has 168 places, 142 transitions, 613 flow. Second operand 27 states and 2733 transitions. [2022-09-16 11:26:58,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:59,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 240 transitions, 1422 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-16 11:26:59,004 INFO L231 Difference]: Finished difference. Result has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:59,004 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1146, PETRI_PLACES=204, PETRI_TRANSITIONS=178} [2022-09-16 11:26:59,005 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 91 predicate places. [2022-09-16 11:26:59,005 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 97.52941176470588) internal successors, (1658), 17 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:26:59,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:59,006 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, 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 11:26:59,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:26:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:59,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:26:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1331666383, now seen corresponding path program 1 times [2022-09-16 11:26:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:59,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684636007] [2022-09-16 11:26:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:26:59,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:59,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684636007] [2022-09-16 11:26:59,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684636007] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:59,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:59,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:59,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713478235] [2022-09-16 11:26:59,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:59,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:59,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:59,262 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:59,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 178 transitions, 1146 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 11:26:59,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:59,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:59,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:00,787 INFO L130 PetriNetUnfolder]: 2877/9793 cut-off events. [2022-09-16 11:27:00,787 INFO L131 PetriNetUnfolder]: For 72013/74302 co-relation queries the response was YES. [2022-09-16 11:27:00,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34976 conditions, 9793 events. 2877/9793 cut-off events. For 72013/74302 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 104064 event pairs, 378 based on Foata normal form. 134/9509 useless extension candidates. Maximal degree in co-relation 34881. Up to 2014 conditions per place. [2022-09-16 11:27:01,029 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 241 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-09-16 11:27:01,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 352 transitions, 3520 flow [2022-09-16 11:27:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:27:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:27:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2022-09-16 11:27:01,031 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-09-16 11:27:01,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2022-09-16 11:27:01,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2022-09-16 11:27:01,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:01,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2022-09-16 11:27:01,032 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 11:27:01,033 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 11:27:01,033 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 11:27:01,033 INFO L175 Difference]: Start difference. First operand has 204 places, 178 transitions, 1146 flow. Second operand 5 states and 483 transitions. [2022-09-16 11:27:01,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 352 transitions, 3520 flow [2022-09-16 11:27:01,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 352 transitions, 3073 flow, removed 184 selfloop flow, removed 8 redundant places. [2022-09-16 11:27:01,146 INFO L231 Difference]: Finished difference. Result has 200 places, 178 transitions, 1025 flow [2022-09-16 11:27:01,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1025, PETRI_PLACES=200, PETRI_TRANSITIONS=178} [2022-09-16 11:27:01,147 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 87 predicate places. [2022-09-16 11:27:01,147 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 178 transitions, 1025 flow [2022-09-16 11:27:01,147 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 11:27:01,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:01,147 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, 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 11:27:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:27:01,148 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1668015338, now seen corresponding path program 1 times [2022-09-16 11:27:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:01,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641800613] [2022-09-16 11:27:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:01,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:01,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641800613] [2022-09-16 11:27:01,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641800613] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:01,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377980388] [2022-09-16 11:27:01,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:01,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:01,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:01,192 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 11:27:01,193 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 11:27:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:01,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:27:01,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:01,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:27:01,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377980388] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:27:01,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:27:01,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:27:01,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070891951] [2022-09-16 11:27:01,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:27:01,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:27:01,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:27:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:27:01,296 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:27:01,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 178 transitions, 1025 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:01,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:01,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:27:01,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:02,967 INFO L130 PetriNetUnfolder]: 2705/9377 cut-off events. [2022-09-16 11:27:02,967 INFO L131 PetriNetUnfolder]: For 72399/73762 co-relation queries the response was YES. [2022-09-16 11:27:03,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34097 conditions, 9377 events. 2705/9377 cut-off events. For 72399/73762 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 99337 event pairs, 715 based on Foata normal form. 134/9151 useless extension candidates. Maximal degree in co-relation 34003. Up to 1966 conditions per place. [2022-09-16 11:27:03,088 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 127 selfloop transitions, 5 changer transitions 0/235 dead transitions. [2022-09-16 11:27:03,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:27:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:27:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2022-09-16 11:27:03,090 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-09-16 11:27:03,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2022-09-16 11:27:03,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2022-09-16 11:27:03,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:03,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2022-09-16 11:27:03,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:03,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:03,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:03,092 INFO L175 Difference]: Start difference. First operand has 200 places, 178 transitions, 1025 flow. Second operand 4 states and 385 transitions. [2022-09-16 11:27:03,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:03,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 235 transitions, 1787 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 11:27:03,195 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:03,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1012, PETRI_PLACES=198, PETRI_TRANSITIONS=177} [2022-09-16 11:27:03,196 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 85 predicate places. [2022-09-16 11:27:03,196 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:03,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:03,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:03,197 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:03,228 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 11:27:03,411 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,SelfDestructingSolverStorable15 [2022-09-16 11:27:03,411 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:03,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2062810811, now seen corresponding path program 1 times [2022-09-16 11:27:03,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:03,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793409379] [2022-09-16 11:27:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:03,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:03,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:03,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793409379] [2022-09-16 11:27:03,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793409379] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:03,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416953694] [2022-09-16 11:27:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:03,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:03,506 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 11:27:03,507 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 11:27:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:03,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:27:03,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:03,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:03,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416953694] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:03,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:03,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-09-16 11:27:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225512914] [2022-09-16 11:27:03,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:27:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:27:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:27:03,929 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:03,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 177 transitions, 1012 flow. Second operand has 23 states, 23 states have (on average 97.3913043478261) internal successors, (2240), 23 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:03,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:03,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:03,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:06,651 INFO L130 PetriNetUnfolder]: 1927/9926 cut-off events. [2022-09-16 11:27:06,651 INFO L131 PetriNetUnfolder]: For 181103/182087 co-relation queries the response was YES. [2022-09-16 11:27:06,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30684 conditions, 9926 events. 1927/9926 cut-off events. For 181103/182087 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 124552 event pairs, 56 based on Foata normal form. 1082/10303 useless extension candidates. Maximal degree in co-relation 30587. Up to 1102 conditions per place. [2022-09-16 11:27:06,773 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 109 selfloop transitions, 157 changer transitions 0/373 dead transitions. [2022-09-16 11:27:06,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-16 11:27:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-09-16 11:27:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4549 transitions. [2022-09-16 11:27:06,787 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8790338164251208 [2022-09-16 11:27:06,788 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4549 transitions. [2022-09-16 11:27:06,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4549 transitions. [2022-09-16 11:27:06,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:06,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4549 transitions. [2022-09-16 11:27:06,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 101.08888888888889) internal successors, (4549), 45 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:06,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 115.0) internal successors, (5290), 46 states have internal predecessors, (5290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:06,808 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 115.0) internal successors, (5290), 46 states have internal predecessors, (5290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:06,808 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1012 flow. Second operand 45 states and 4549 transitions. [2022-09-16 11:27:06,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:06,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 373 transitions, 2912 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-09-16 11:27:06,925 INFO L231 Difference]: Finished difference. Result has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:06,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2573, PETRI_PLACES=257, PETRI_TRANSITIONS=280} [2022-09-16 11:27:06,926 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 144 predicate places. [2022-09-16 11:27:06,926 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:06,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.3913043478261) internal successors, (2240), 23 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:06,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:06,927 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:06,957 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 11:27:07,143 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,SelfDestructingSolverStorable16 [2022-09-16 11:27:07,144 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 945577465, now seen corresponding path program 2 times [2022-09-16 11:27:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:07,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657933586] [2022-09-16 11:27:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657933586] [2022-09-16 11:27:07,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657933586] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:07,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941875371] [2022-09-16 11:27:07,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:07,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:07,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:07,279 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 11:27:07,282 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 11:27:07,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:07,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:07,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:27:07,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:07,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:07,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941875371] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:07,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:07,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-09-16 11:27:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535658200] [2022-09-16 11:27:07,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:07,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:27:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:27:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:27:07,894 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:27:07,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 280 transitions, 2573 flow. Second operand has 35 states, 35 states have (on average 94.8) internal successors, (3318), 35 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:07,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:07,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:27:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:18,043 INFO L130 PetriNetUnfolder]: 11112/40437 cut-off events. [2022-09-16 11:27:18,044 INFO L131 PetriNetUnfolder]: For 291174/296768 co-relation queries the response was YES. [2022-09-16 11:27:18,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140159 conditions, 40437 events. 11112/40437 cut-off events. For 291174/296768 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 520660 event pairs, 396 based on Foata normal form. 588/39608 useless extension candidates. Maximal degree in co-relation 140040. Up to 6934 conditions per place. [2022-09-16 11:27:19,108 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3408 dead transitions. [2022-09-16 11:27:19,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-16 11:27:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-16 11:27:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2234 transitions. [2022-09-16 11:27:19,111 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8446124763705104 [2022-09-16 11:27:19,112 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2234 transitions. [2022-09-16 11:27:19,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2234 transitions. [2022-09-16 11:27:19,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:19,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2234 transitions. [2022-09-16 11:27:19,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 97.1304347826087) internal successors, (2234), 23 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:19,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 115.0) internal successors, (2760), 24 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:19,118 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 115.0) internal successors, (2760), 24 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:19,119 INFO L175 Difference]: Start difference. First operand has 257 places, 280 transitions, 2573 flow. Second operand 23 states and 2234 transitions. [2022-09-16 11:27:19,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:19,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 3408 transitions, 42686 flow, removed 1940 selfloop flow, removed 15 redundant places. [2022-09-16 11:27:19,741 INFO L231 Difference]: Finished difference. Result has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:19,742 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2475, PETRI_PLACES=269, PETRI_TRANSITIONS=293} [2022-09-16 11:27:19,742 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 156 predicate places. [2022-09-16 11:27:19,742 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:19,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 94.8) internal successors, (3318), 35 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:19,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:19,743 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 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 11:27:19,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-09-16 11:27:19,944 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,SelfDestructingSolverStorable17 [2022-09-16 11:27:19,944 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1359729348, now seen corresponding path program 2 times [2022-09-16 11:27:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:19,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265291645] [2022-09-16 11:27:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:20,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:20,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265291645] [2022-09-16 11:27:20,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265291645] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:20,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103672076] [2022-09-16 11:27:20,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:20,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:20,059 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 11:27:20,060 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 11:27:20,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:20,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:20,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:27:20,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:20,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:20,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103672076] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:20,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:20,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:27:20,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689904911] [2022-09-16 11:27:20,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:20,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:27:20,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:20,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:27:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:27:20,641 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:20,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 293 transitions, 2475 flow. Second operand has 29 states, 29 states have (on average 97.3103448275862) internal successors, (2822), 29 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:20,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:20,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:20,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:31,303 INFO L130 PetriNetUnfolder]: 7408/38904 cut-off events. [2022-09-16 11:27:31,303 INFO L131 PetriNetUnfolder]: For 1432058/1435750 co-relation queries the response was YES. [2022-09-16 11:27:32,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137052 conditions, 38904 events. 7408/38904 cut-off events. For 1432058/1435750 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 603671 event pairs, 180 based on Foata normal form. 1964/37829 useless extension candidates. Maximal degree in co-relation 136927. Up to 3773 conditions per place. [2022-09-16 11:27:32,593 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 157 selfloop transitions, 284 changer transitions 0/561 dead transitions. [2022-09-16 11:27:32,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-16 11:27:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-09-16 11:27:32,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5540 transitions. [2022-09-16 11:27:32,599 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8758893280632412 [2022-09-16 11:27:32,599 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5540 transitions. [2022-09-16 11:27:32,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5540 transitions. [2022-09-16 11:27:32,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:32,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5540 transitions. [2022-09-16 11:27:32,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 100.72727272727273) internal successors, (5540), 55 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:32,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 115.0) internal successors, (6440), 56 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:32,617 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 115.0) internal successors, (6440), 56 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:32,617 INFO L175 Difference]: Start difference. First operand has 269 places, 293 transitions, 2475 flow. Second operand 55 states and 5540 transitions. [2022-09-16 11:27:32,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:34,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 561 transitions, 5586 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-09-16 11:27:34,299 INFO L231 Difference]: Finished difference. Result has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:34,299 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4969, PETRI_PLACES=326, PETRI_TRANSITIONS=441} [2022-09-16 11:27:34,300 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 213 predicate places. [2022-09-16 11:27:34,300 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:34,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 97.3103448275862) internal successors, (2822), 29 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:34,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:34,301 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:27:34,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-16 11:27:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:34,515 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:27:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -500977530, now seen corresponding path program 1 times [2022-09-16 11:27:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:34,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202823738] [2022-09-16 11:27:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:34,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202823738] [2022-09-16 11:27:34,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202823738] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:34,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085944098] [2022-09-16 11:27:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:34,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:34,604 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 11:27:34,605 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 11:27:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:34,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:27:34,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:34,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:27:35,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085944098] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:35,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:35,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-09-16 11:27:35,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461036072] [2022-09-16 11:27:35,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:35,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 11:27:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 11:27:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:27:35,085 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:35,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 441 transitions, 4969 flow. Second operand has 26 states, 26 states have (on average 97.34615384615384) internal successors, (2531), 26 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:35,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:35,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:35,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:57,042 INFO L130 PetriNetUnfolder]: 12933/71744 cut-off events. [2022-09-16 11:27:57,043 INFO L131 PetriNetUnfolder]: For 4069239/4074489 co-relation queries the response was YES. [2022-09-16 11:27:59,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274442 conditions, 71744 events. 12933/71744 cut-off events. For 4069239/4074489 co-relation queries the response was YES. Maximal size of possible extension queue 4785. Compared 1226422 event pairs, 225 based on Foata normal form. 2835/68924 useless extension candidates. Maximal degree in co-relation 274304. Up to 7441 conditions per place. [2022-09-16 11:27:59,530 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 247 selfloop transitions, 515 changer transitions 0/882 dead transitions. [2022-09-16 11:27:59,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 882 transitions, 12453 flow [2022-09-16 11:27:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:27:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-09-16 11:27:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5841 transitions. [2022-09-16 11:27:59,537 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875712143928036 [2022-09-16 11:27:59,537 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5841 transitions. [2022-09-16 11:27:59,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5841 transitions. [2022-09-16 11:27:59,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:59,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5841 transitions. [2022-09-16 11:27:59,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 100.70689655172414) internal successors, (5841), 58 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:59,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 115.0) internal successors, (6785), 59 states have internal predecessors, (6785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:59,557 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 115.0) internal successors, (6785), 59 states have internal predecessors, (6785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:27:59,557 INFO L175 Difference]: Start difference. First operand has 326 places, 441 transitions, 4969 flow. Second operand 58 states and 5841 transitions. [2022-09-16 11:27:59,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 882 transitions, 12453 flow [2022-09-16 11:28:06,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 882 transitions, 11780 flow, removed 298 selfloop flow, removed 23 redundant places. [2022-09-16 11:28:06,896 INFO L231 Difference]: Finished difference. Result has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:06,897 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11011, PETRI_PLACES=382, PETRI_TRANSITIONS=760} [2022-09-16 11:28:06,897 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 269 predicate places. [2022-09-16 11:28:06,897 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:06,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 97.34615384615384) internal successors, (2531), 26 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:06,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:06,898 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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] [2022-09-16 11:28:06,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-09-16 11:28:07,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:07,104 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-09-16 11:28:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash 769685556, now seen corresponding path program 2 times [2022-09-16 11:28:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:07,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832569046] [2022-09-16 11:28:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832569046] [2022-09-16 11:28:07,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832569046] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:07,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971953348] [2022-09-16 11:28:07,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:28:07,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:07,216 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 11:28:07,217 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 11:28:07,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:28:07,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:28:07,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:28:07,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:07,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:28:07,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971953348] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:07,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:07,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:28:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92470823] [2022-09-16 11:28:07,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:07,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:28:07,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:28:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:28:07,768 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:28:07,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 760 transitions, 11011 flow. Second operand has 29 states, 29 states have (on average 97.3103448275862) internal successors, (2822), 29 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:07,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:07,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:28:07,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:28:46,517 INFO L130 PetriNetUnfolder]: 18512/102738 cut-off events. [2022-09-16 11:28:46,517 INFO L131 PetriNetUnfolder]: For 5194715/5200704 co-relation queries the response was YES. [2022-09-16 11:28:50,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442111 conditions, 102738 events. 18512/102738 cut-off events. For 5194715/5200704 co-relation queries the response was YES. Maximal size of possible extension queue 7238. Compared 1851141 event pairs, 330 based on Foata normal form. 2119/96653 useless extension candidates. Maximal degree in co-relation 441950. Up to 10261 conditions per place. [2022-09-16 11:28:51,595 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 325 selfloop transitions, 772 changer transitions 0/1217 dead transitions. [2022-09-16 11:28:51,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1217 transitions, 19820 flow [2022-09-16 11:28:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-16 11:28:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-09-16 11:28:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5538 transitions. [2022-09-16 11:28:51,600 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8755731225296443 [2022-09-16 11:28:51,600 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5538 transitions. [2022-09-16 11:28:51,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5538 transitions. [2022-09-16 11:28:51,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:28:51,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5538 transitions. [2022-09-16 11:28:51,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 100.69090909090909) internal successors, (5538), 55 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:51,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 115.0) internal successors, (6440), 56 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:51,616 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 115.0) internal successors, (6440), 56 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:28:51,616 INFO L175 Difference]: Start difference. First operand has 382 places, 760 transitions, 11011 flow. Second operand 55 states and 5538 transitions. [2022-09-16 11:28:51,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1217 transitions, 19820 flow