/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_unsafe-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:26:45,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:26:45,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:26:45,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:26:45,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:26:45,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:26:45,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:26:45,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:26:45,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:26:45,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:26:45,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:26:45,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:26:45,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:26:45,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:26:45,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:26:45,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:26:45,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:26:45,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:26:45,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:26:45,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:26:45,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:26:45,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:26:45,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:26:45,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:26:45,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:26:45,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:26:45,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:26:45,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:26:45,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:26:45,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:26:45,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:26:45,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:26:45,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:26:45,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:26:45,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:26:45,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:26:45,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:26:45,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:26:45,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:26:45,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:26:45,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:26:45,765 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 11:26:45,789 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:26:45,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:26:45,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:26:45,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:26:45,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:26:45,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:26:45,791 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:26:45,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:26:45,791 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:26:45,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:26:45,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:26:45,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:26:45,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:26:45,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:26:45,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:26:45,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:45,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:26:45,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:26:45,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:26:45,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:26:45,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:26:45,794 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:26:45,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:26:45,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:26:45,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:26:46,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:26:46,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:26:46,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:26:46,011 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:26:46,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-5.i [2022-09-16 11:26:46,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b9905f4/02a3c08a085046cc8b28f402be165867/FLAG36beb5d05 [2022-09-16 11:26:46,375 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:26:46,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-5.i [2022-09-16 11:26:46,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b9905f4/02a3c08a085046cc8b28f402be165867/FLAG36beb5d05 [2022-09-16 11:26:46,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b9905f4/02a3c08a085046cc8b28f402be165867 [2022-09-16 11:26:46,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:26:46,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:26:46,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:46,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:26:46,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:26:46,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:46" (1/1) ... [2022-09-16 11:26:46,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d46403 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 11:26:46,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:26:46" (1/1) ... [2022-09-16 11:26:46,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:26:46,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:26:47,111 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_unsafe-5.i[30819,30832] [2022-09-16 11:26:47,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,119 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:26:47,154 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_unsafe-5.i[30819,30832] [2022-09-16 11:26:47,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:26:47,192 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:26:47,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:26:47 WrapperNode [2022-09-16 11:26:47,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:26:47,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:26:47,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:26:47,199 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 11:26:47,222 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 11:26:47,241 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-09-16 11:26:47,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:26:47,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:26:47,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:26:47,249 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 11:26:47,249 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 11:26:47,253 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 11:26:47,253 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 11:26:47,260 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 11:26:47,262 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 11:26:47,266 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 11:26:47,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:26:47,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:26:47,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:26:47,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:26:47,272 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 11:26:47,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:26:47,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:47,293 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 11:26:47,297 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 11:26:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 11:26:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 11:26:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:26:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:26:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:26:47,332 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 11:26:47,412 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:26:47,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:26:47,592 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:26:47,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:26:47,609 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:26:47,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:26:47 BoogieIcfgContainer [2022-09-16 11:26:47,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:26:47,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:26:47,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:26:47,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:26:47,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:26:46" (1/3) ... [2022-09-16 11:26:47,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e48c0de 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 11:26:47,631 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 11:26:47,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e48c0de 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 11:26:47,631 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 11:26:47,632 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2022-09-16 11:26:47,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:26:47,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:26:47,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:26:47,704 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:26:47,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:47,773 INFO L130 PetriNetUnfolder]: 7/113 cut-off events. [2022-09-16 11:26:47,773 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:47,777 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 11:26:47,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 115 transitions, 240 flow [2022-09-16 11:26:47,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 113 transitions, 232 flow [2022-09-16 11:26:47,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:26:47,796 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;@1a8a8696, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:26:47,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-09-16 11:26:47,804 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-09-16 11:26:47,804 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:26:47,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:47,805 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 11:26:47,806 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 11:26:47,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:47,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2090278822, now seen corresponding path program 1 times [2022-09-16 11:26:47,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473798713] [2022-09-16 11:26:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,031 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 11:26:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473798713] [2022-09-16 11:26:48,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473798713] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:48,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:48,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800681967] [2022-09-16 11:26:48,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:48,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:48,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:48,063 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:48,070 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 11:26:48,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:48,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:48,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:48,278 INFO L130 PetriNetUnfolder]: 131/521 cut-off events. [2022-09-16 11:26:48,278 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:26:48,281 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 11:26:48,285 INFO L137 encePairwiseOnDemand]: 103/115 looper letters, 22 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2022-09-16 11:26:48,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2022-09-16 11:26:48,298 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9282608695652174 [2022-09-16 11:26:48,299 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:48,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2022-09-16 11:26:48,305 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 11:26:48,310 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 11:26:48,310 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 11:26:48,312 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 232 flow. Second operand 4 states and 427 transitions. [2022-09-16 11:26:48,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 305 flow [2022-09-16 11:26:48,315 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 11:26:48,317 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:48,319 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 11:26:48,321 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 1 predicate places. [2022-09-16 11:26:48,321 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 251 flow [2022-09-16 11:26:48,322 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 11:26:48,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:48,322 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 11:26:48,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:26:48,322 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 11:26:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1286757501, now seen corresponding path program 1 times [2022-09-16 11:26:48,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:48,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388804509] [2022-09-16 11:26:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,381 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 11:26:48,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388804509] [2022-09-16 11:26:48,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388804509] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:48,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:48,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872554526] [2022-09-16 11:26:48,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:48,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:48,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:48,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:48,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:48,385 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 11:26:48,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:48,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:48,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:48,483 INFO L130 PetriNetUnfolder]: 109/309 cut-off events. [2022-09-16 11:26:48,485 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-09-16 11:26:48,489 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 11:26:48,494 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 32 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2022-09-16 11:26:48,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2022-09-16 11:26:48,502 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8730434782608696 [2022-09-16 11:26:48,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2022-09-16 11:26:48,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2022-09-16 11:26:48,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:48,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2022-09-16 11:26:48,504 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 11:26:48,506 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 11:26:48,506 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 11:26:48,506 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 251 flow. Second operand 5 states and 502 transitions. [2022-09-16 11:26:48,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 375 flow [2022-09-16 11:26:48,508 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 11:26:48,511 INFO L231 Difference]: Finished difference. Result has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:48,511 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 11:26:48,513 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 8 predicate places. [2022-09-16 11:26:48,513 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 114 transitions, 283 flow [2022-09-16 11:26:48,514 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 11:26:48,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:48,514 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 11:26:48,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:26:48,514 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 11:26:48,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:48,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232894, now seen corresponding path program 1 times [2022-09-16 11:26:48,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:48,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730827294] [2022-09-16 11:26:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,631 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 11:26:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:48,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730827294] [2022-09-16 11:26:48,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730827294] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:48,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839344936] [2022-09-16 11:26:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:48,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:48,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:48,635 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 11:26:48,636 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 11:26:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:48,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:48,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:48,827 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 11:26:48,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:48,917 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 11:26:48,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839344936] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:48,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:48,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-09-16 11:26:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065021699] [2022-09-16 11:26:48,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:48,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:26:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:48,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:26:48,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:26:48,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:48,920 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 11:26:48,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:48,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:48,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:49,339 INFO L130 PetriNetUnfolder]: 381/1587 cut-off events. [2022-09-16 11:26:49,340 INFO L131 PetriNetUnfolder]: For 233/254 co-relation queries the response was YES. [2022-09-16 11:26:49,345 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 11:26:49,354 INFO L137 encePairwiseOnDemand]: 105/115 looper letters, 65 selfloop transitions, 41 changer transitions 0/203 dead transitions. [2022-09-16 11:26:49,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:26:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:26:49,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1853 transitions. [2022-09-16 11:26:49,358 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8951690821256039 [2022-09-16 11:26:49,358 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1853 transitions. [2022-09-16 11:26:49,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1853 transitions. [2022-09-16 11:26:49,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:49,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1853 transitions. [2022-09-16 11:26:49,363 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 11:26:49,367 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 11:26:49,368 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 11:26:49,368 INFO L175 Difference]: Start difference. First operand has 121 places, 114 transitions, 283 flow. Second operand 18 states and 1853 transitions. [2022-09-16 11:26:49,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 203 transitions, 787 flow [2022-09-16 11:26:49,373 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 11:26:49,375 INFO L231 Difference]: Finished difference. Result has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:49,376 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 11:26:49,377 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:49,377 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 155 transitions, 675 flow [2022-09-16 11:26:49,378 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 11:26:49,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:49,378 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 11:26:49,414 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 11:26:49,598 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 11:26:49,598 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 11:26:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1214232893, now seen corresponding path program 1 times [2022-09-16 11:26:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:49,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992781737] [2022-09-16 11:26:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,656 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 11:26:49,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:49,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992781737] [2022-09-16 11:26:49,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992781737] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:49,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775279187] [2022-09-16 11:26:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:49,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:49,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:49,672 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 11:26:49,673 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 11:26:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:49,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:49,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:49,802 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 11:26:49,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:49,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775279187] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:49,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:49,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-09-16 11:26:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219513933] [2022-09-16 11:26:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:49,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:49,805 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:49,805 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 11:26:49,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:49,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:49,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:49,935 INFO L130 PetriNetUnfolder]: 176/898 cut-off events. [2022-09-16 11:26:49,937 INFO L131 PetriNetUnfolder]: For 4689/4899 co-relation queries the response was YES. [2022-09-16 11:26:49,943 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 11:26:49,949 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 25 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2022-09-16 11:26:49,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-09-16 11:26:49,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8747826086956522 [2022-09-16 11:26:49,951 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-09-16 11:26:49,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-09-16 11:26:49,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:49,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-09-16 11:26:49,952 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 11:26:49,953 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 11:26:49,953 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 11:26:49,953 INFO L175 Difference]: Start difference. First operand has 152 places, 155 transitions, 675 flow. Second operand 5 states and 503 transitions. [2022-09-16 11:26:49,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 136 transitions, 614 flow [2022-09-16 11:26:49,963 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 11:26:49,966 INFO L231 Difference]: Finished difference. Result has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:49,966 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 11:26:49,967 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 25 predicate places. [2022-09-16 11:26:49,968 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 131 transitions, 468 flow [2022-09-16 11:26:49,968 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 11:26:49,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:49,968 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 11:26:50,001 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 11:26:50,187 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 11:26:50,187 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 11:26:50,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash -447258493, now seen corresponding path program 1 times [2022-09-16 11:26:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:50,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030402687] [2022-09-16 11:26:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,259 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 11:26:50,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030402687] [2022-09-16 11:26:50,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030402687] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:50,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:50,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835630145] [2022-09-16 11:26:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:50,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:50,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:50,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:50,261 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:50,261 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 11:26:50,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:50,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:50,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,377 INFO L130 PetriNetUnfolder]: 168/722 cut-off events. [2022-09-16 11:26:50,377 INFO L131 PetriNetUnfolder]: For 1848/1962 co-relation queries the response was YES. [2022-09-16 11:26:50,385 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 11:26:50,392 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 62 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2022-09-16 11:26:50,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2022-09-16 11:26:50,394 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8573913043478261 [2022-09-16 11:26:50,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2022-09-16 11:26:50,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2022-09-16 11:26:50,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:50,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2022-09-16 11:26:50,395 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 11:26:50,396 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 11:26:50,396 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 11:26:50,396 INFO L175 Difference]: Start difference. First operand has 138 places, 131 transitions, 468 flow. Second operand 5 states and 493 transitions. [2022-09-16 11:26:50,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 160 transitions, 787 flow [2022-09-16 11:26:50,399 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 11:26:50,401 INFO L231 Difference]: Finished difference. Result has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:50,401 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 11:26:50,403 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 30 predicate places. [2022-09-16 11:26:50,404 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 134 transitions, 497 flow [2022-09-16 11:26:50,404 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 11:26:50,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:50,404 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 11:26:50,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:26:50,404 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 11:26:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:50,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1353304293, now seen corresponding path program 1 times [2022-09-16 11:26:50,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:50,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394546941] [2022-09-16 11:26:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,448 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 11:26:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394546941] [2022-09-16 11:26:50,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394546941] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:50,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:50,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552421619] [2022-09-16 11:26:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:50,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:50,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:50,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:50,454 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:50,454 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 11:26:50,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:50,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:50,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,567 INFO L130 PetriNetUnfolder]: 189/682 cut-off events. [2022-09-16 11:26:50,567 INFO L131 PetriNetUnfolder]: For 1854/2009 co-relation queries the response was YES. [2022-09-16 11:26:50,575 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 11:26:50,582 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/161 dead transitions. [2022-09-16 11:26:50,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2022-09-16 11:26:50,584 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8469565217391304 [2022-09-16 11:26:50,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2022-09-16 11:26:50,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2022-09-16 11:26:50,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:50,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2022-09-16 11:26:50,585 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 11:26:50,586 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 11:26:50,586 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 11:26:50,586 INFO L175 Difference]: Start difference. First operand has 143 places, 134 transitions, 497 flow. Second operand 5 states and 487 transitions. [2022-09-16 11:26:50,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 845 flow [2022-09-16 11:26:50,590 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 11:26:50,593 INFO L231 Difference]: Finished difference. Result has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:50,593 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 11:26:50,594 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 33 predicate places. [2022-09-16 11:26:50,595 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 134 transitions, 515 flow [2022-09-16 11:26:50,595 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 11:26:50,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:50,595 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 11:26:50,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:26:50,595 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 11:26:50,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:50,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2117796030, now seen corresponding path program 1 times [2022-09-16 11:26:50,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:50,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291322406] [2022-09-16 11:26:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:50,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:50,642 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 11:26:50,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:50,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291322406] [2022-09-16 11:26:50,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291322406] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:50,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:50,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:50,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293455137] [2022-09-16 11:26:50,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:50,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:50,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:50,644 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 115 [2022-09-16 11:26:50,645 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 11:26:50,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:50,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 115 [2022-09-16 11:26:50,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:50,918 INFO L130 PetriNetUnfolder]: 713/2548 cut-off events. [2022-09-16 11:26:50,919 INFO L131 PetriNetUnfolder]: For 6530/6901 co-relation queries the response was YES. [2022-09-16 11:26:50,937 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 11:26:50,952 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 86 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2022-09-16 11:26:50,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2022-09-16 11:26:50,954 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8739130434782608 [2022-09-16 11:26:50,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2022-09-16 11:26:50,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2022-09-16 11:26:51,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2022-09-16 11:26:51,005 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 11:26:51,005 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 11:26:51,006 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 11:26:51,006 INFO L175 Difference]: Start difference. First operand has 146 places, 134 transitions, 515 flow. Second operand 4 states and 402 transitions. [2022-09-16 11:26:51,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 188 transitions, 1075 flow [2022-09-16 11:26:51,013 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 11:26:51,014 INFO L231 Difference]: Finished difference. Result has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:51,015 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 11:26:51,016 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 35 predicate places. [2022-09-16 11:26:51,016 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 136 transitions, 529 flow [2022-09-16 11:26:51,016 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 11:26:51,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,016 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 11:26:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:26:51,016 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 11:26:51,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash -997239562, now seen corresponding path program 1 times [2022-09-16 11:26:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281648527] [2022-09-16 11:26:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,057 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 11:26:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281648527] [2022-09-16 11:26:51,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281648527] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:51,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700933168] [2022-09-16 11:26:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:51,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:51,059 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 11:26:51,060 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 11:26:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:26:51,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:51,146 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 11:26:51,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:51,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700933168] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:51,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:26:51,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022196147] [2022-09-16 11:26:51,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:26:51,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:26:51,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:26:51,149 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:51,150 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 11:26:51,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:51,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,297 INFO L130 PetriNetUnfolder]: 176/686 cut-off events. [2022-09-16 11:26:51,297 INFO L131 PetriNetUnfolder]: For 1808/1945 co-relation queries the response was YES. [2022-09-16 11:26:51,308 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 11:26:51,320 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 62 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2022-09-16 11:26:51,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:26:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:26:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 680 transitions. [2022-09-16 11:26:51,322 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84472049689441 [2022-09-16 11:26:51,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 680 transitions. [2022-09-16 11:26:51,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 680 transitions. [2022-09-16 11:26:51,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 680 transitions. [2022-09-16 11:26:51,325 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 11:26:51,326 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 11:26:51,326 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 11:26:51,326 INFO L175 Difference]: Start difference. First operand has 148 places, 136 transitions, 529 flow. Second operand 7 states and 680 transitions. [2022-09-16 11:26:51,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 164 transitions, 873 flow [2022-09-16 11:26:51,330 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 11:26:51,332 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:51,332 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 11:26:51,334 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 39 predicate places. [2022-09-16 11:26:51,334 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 535 flow [2022-09-16 11:26:51,334 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 11:26:51,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,335 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 11:26:51,354 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 11:26:51,549 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 11:26:51,549 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 11:26:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,550 INFO L85 PathProgramCache]: Analyzing trace with hash 966995920, now seen corresponding path program 1 times [2022-09-16 11:26:51,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417471967] [2022-09-16 11:26:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,587 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 11:26:51,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417471967] [2022-09-16 11:26:51,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417471967] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:51,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:51,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970733637] [2022-09-16 11:26:51,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:51,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:51,589 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:51,589 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 11:26:51,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:51,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:51,748 INFO L130 PetriNetUnfolder]: 155/627 cut-off events. [2022-09-16 11:26:51,748 INFO L131 PetriNetUnfolder]: For 1733/1846 co-relation queries the response was YES. [2022-09-16 11:26:51,759 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 11:26:51,767 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 59 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2022-09-16 11:26:51,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:51,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2022-09-16 11:26:51,768 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8417391304347827 [2022-09-16 11:26:51,769 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2022-09-16 11:26:51,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2022-09-16 11:26:51,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:51,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2022-09-16 11:26:51,770 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 11:26:51,771 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 11:26:51,771 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 11:26:51,771 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 535 flow. Second operand 5 states and 484 transitions. [2022-09-16 11:26:51,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 162 transitions, 874 flow [2022-09-16 11:26:51,775 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 11:26:51,777 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:51,778 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 11:26:51,778 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 38 predicate places. [2022-09-16 11:26:51,778 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 544 flow [2022-09-16 11:26:51,778 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 11:26:51,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:51,779 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 11:26:51,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:26:51,779 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 11:26:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:51,779 INFO L85 PathProgramCache]: Analyzing trace with hash -87897220, now seen corresponding path program 1 times [2022-09-16 11:26:51,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:51,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349091962] [2022-09-16 11:26:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,830 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 11:26:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:51,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349091962] [2022-09-16 11:26:51,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349091962] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:51,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554003435] [2022-09-16 11:26:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:51,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:51,832 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 11:26:51,833 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 11:26:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:51,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:51,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:51,917 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 11:26:51,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:51,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554003435] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:51,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:51,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:26:51,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89670035] [2022-09-16 11:26:51,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:51,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:51,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:51,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:51,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:26:51,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:51,920 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 11:26:51,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:51,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:51,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,038 INFO L130 PetriNetUnfolder]: 148/621 cut-off events. [2022-09-16 11:26:52,038 INFO L131 PetriNetUnfolder]: For 1731/1863 co-relation queries the response was YES. [2022-09-16 11:26:52,050 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 11:26:52,057 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 43 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2022-09-16 11:26:52,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:26:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:26:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2022-09-16 11:26:52,058 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.841304347826087 [2022-09-16 11:26:52,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2022-09-16 11:26:52,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2022-09-16 11:26:52,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2022-09-16 11:26:52,060 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 11:26:52,060 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 11:26:52,060 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 11:26:52,061 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 544 flow. Second operand 4 states and 387 transitions. [2022-09-16 11:26:52,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 143 transitions, 705 flow [2022-09-16 11:26:52,064 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 11:26:52,066 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:52,066 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 11:26:52,066 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 37 predicate places. [2022-09-16 11:26:52,067 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 538 flow [2022-09-16 11:26:52,067 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 11:26:52,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,067 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 11:26:52,097 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 11:26:52,279 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 11:26:52,279 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 11:26:52,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1641089002, now seen corresponding path program 1 times [2022-09-16 11:26:52,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742482091] [2022-09-16 11:26:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,305 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 11:26:52,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742482091] [2022-09-16 11:26:52,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742482091] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:52,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:52,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742859734] [2022-09-16 11:26:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:52,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:52,308 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 11:26:52,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:52,586 INFO L130 PetriNetUnfolder]: 844/2484 cut-off events. [2022-09-16 11:26:52,586 INFO L131 PetriNetUnfolder]: For 6940/7316 co-relation queries the response was YES. [2022-09-16 11:26:52,602 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 11:26:52,614 INFO L137 encePairwiseOnDemand]: 108/115 looper letters, 112 selfloop transitions, 4 changer transitions 0/212 dead transitions. [2022-09-16 11:26:52,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-09-16 11:26:52,615 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8539130434782609 [2022-09-16 11:26:52,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-09-16 11:26:52,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-09-16 11:26:52,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:52,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-09-16 11:26:52,617 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 11:26:52,617 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 11:26:52,618 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 11:26:52,618 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 538 flow. Second operand 5 states and 491 transitions. [2022-09-16 11:26:52,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 212 transitions, 1334 flow [2022-09-16 11:26:52,625 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 11:26:52,627 INFO L231 Difference]: Finished difference. Result has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:52,627 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 11:26:52,628 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 41 predicate places. [2022-09-16 11:26:52,628 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 137 transitions, 560 flow [2022-09-16 11:26:52,628 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 11:26:52,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:52,628 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 11:26:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:26:52,628 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 11:26:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1948310297, now seen corresponding path program 1 times [2022-09-16 11:26:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:52,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561626489] [2022-09-16 11:26:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,712 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 11:26:52,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:52,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561626489] [2022-09-16 11:26:52,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561626489] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:52,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021819863] [2022-09-16 11:26:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:52,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:52,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:52,714 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 11:26:52,715 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 11:26:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:52,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:52,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:52,889 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 11:26:52,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:52,970 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 11:26:52,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021819863] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:52,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:52,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:52,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109091012] [2022-09-16 11:26:52,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:52,972 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:52,973 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 11:26:52,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:52,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:52,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:53,571 INFO L130 PetriNetUnfolder]: 1218/4083 cut-off events. [2022-09-16 11:26:53,571 INFO L131 PetriNetUnfolder]: For 9443/9990 co-relation queries the response was YES. [2022-09-16 11:26:53,591 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 11:26:53,608 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 211 selfloop transitions, 11 changer transitions 0/320 dead transitions. [2022-09-16 11:26:53,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:26:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:26:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1071 transitions. [2022-09-16 11:26:53,610 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8466403162055336 [2022-09-16 11:26:53,610 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1071 transitions. [2022-09-16 11:26:53,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1071 transitions. [2022-09-16 11:26:53,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:53,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1071 transitions. [2022-09-16 11:26:53,612 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 11:26:53,614 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 11:26:53,614 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 11:26:53,614 INFO L175 Difference]: Start difference. First operand has 154 places, 137 transitions, 560 flow. Second operand 11 states and 1071 transitions. [2022-09-16 11:26:53,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 320 transitions, 2330 flow [2022-09-16 11:26:53,622 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 11:26:53,624 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:53,624 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 11:26:53,625 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 54 predicate places. [2022-09-16 11:26:53,625 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 615 flow [2022-09-16 11:26:53,626 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 11:26:53,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:53,626 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 11:26:53,645 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 11:26:53,836 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 11:26:53,836 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 11:26:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash 268077310, now seen corresponding path program 1 times [2022-09-16 11:26:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:53,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578989449] [2022-09-16 11:26:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:53,974 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 11:26:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:53,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578989449] [2022-09-16 11:26:53,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578989449] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:53,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020818351] [2022-09-16 11:26:53,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:53,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:53,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:53,976 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 11:26:53,978 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 11:26:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:54,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:54,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:54,161 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 11:26:54,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:54,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020818351] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:54,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:54,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-09-16 11:26:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820646666] [2022-09-16 11:26:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:54,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:26:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:26:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:26:54,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:26:54,164 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 11:26:54,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:54,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:26:54,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:54,680 INFO L130 PetriNetUnfolder]: 1071/3807 cut-off events. [2022-09-16 11:26:54,681 INFO L131 PetriNetUnfolder]: For 8653/9131 co-relation queries the response was YES. [2022-09-16 11:26:54,703 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 11:26:54,719 INFO L137 encePairwiseOnDemand]: 110/115 looper letters, 90 selfloop transitions, 4 changer transitions 0/192 dead transitions. [2022-09-16 11:26:54,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:26:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:26:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 581 transitions. [2022-09-16 11:26:54,721 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8420289855072464 [2022-09-16 11:26:54,721 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 581 transitions. [2022-09-16 11:26:54,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 581 transitions. [2022-09-16 11:26:54,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:54,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 581 transitions. [2022-09-16 11:26:54,722 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 11:26:54,723 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 11:26:54,723 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 11:26:54,723 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 615 flow. Second operand 6 states and 581 transitions. [2022-09-16 11:26:54,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 192 transitions, 1179 flow [2022-09-16 11:26:54,731 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 11:26:54,733 INFO L231 Difference]: Finished difference. Result has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:54,733 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 11:26:54,734 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 55 predicate places. [2022-09-16 11:26:54,734 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 142 transitions, 613 flow [2022-09-16 11:26:54,734 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 11:26:54,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:54,734 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 11:26:54,755 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 11:26:54,947 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 11:26:54,947 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 11:26:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354715, now seen corresponding path program 1 times [2022-09-16 11:26:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:54,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922071419] [2022-09-16 11:26:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:54,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:55,042 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 11:26:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922071419] [2022-09-16 11:26:55,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922071419] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350355680] [2022-09-16 11:26:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:55,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:55,044 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 11:26:55,045 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 11:26:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:55,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:26:55,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:55,213 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 11:26:55,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:26:55,298 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 11:26:55,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350355680] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:26:55,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:26:55,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-09-16 11:26:55,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520004652] [2022-09-16 11:26:55,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:26:55,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:26:55,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:55,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:26:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:26:55,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:26:55,301 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 11:26:55,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:55,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:26:55,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:56,234 INFO L130 PetriNetUnfolder]: 1030/4727 cut-off events. [2022-09-16 11:26:56,235 INFO L131 PetriNetUnfolder]: For 21394/22087 co-relation queries the response was YES. [2022-09-16 11:26:56,272 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 11:26:56,291 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 74 selfloop transitions, 58 changer transitions 0/240 dead transitions. [2022-09-16 11:26:56,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-16 11:26:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-16 11:26:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2733 transitions. [2022-09-16 11:26:56,296 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8801932367149758 [2022-09-16 11:26:56,296 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2733 transitions. [2022-09-16 11:26:56,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2733 transitions. [2022-09-16 11:26:56,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:56,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2733 transitions. [2022-09-16 11:26:56,302 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 11:26:56,377 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 11:26:56,378 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 11:26:56,378 INFO L175 Difference]: Start difference. First operand has 168 places, 142 transitions, 613 flow. Second operand 27 states and 2733 transitions. [2022-09-16 11:26:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 240 transitions, 1431 flow [2022-09-16 11:26:56,398 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 11:26:56,401 INFO L231 Difference]: Finished difference. Result has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:56,401 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 11:26:56,402 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 91 predicate places. [2022-09-16 11:26:56,402 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 178 transitions, 1146 flow [2022-09-16 11:26:56,403 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 11:26:56,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:56,403 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 11:26:56,437 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 11:26:56,615 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 11:26:56,615 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 11:26:56,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1331666383, now seen corresponding path program 1 times [2022-09-16 11:26:56,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:56,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551415674] [2022-09-16 11:26:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:56,646 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 11:26:56,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:56,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551415674] [2022-09-16 11:26:56,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551415674] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:56,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:26:56,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:26:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628457184] [2022-09-16 11:26:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:56,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:26:56,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:26:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:26:56,648 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:56,648 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 11:26:56,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:56,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:26:58,102 INFO L130 PetriNetUnfolder]: 2877/9793 cut-off events. [2022-09-16 11:26:58,102 INFO L131 PetriNetUnfolder]: For 72013/74302 co-relation queries the response was YES. [2022-09-16 11:26:58,179 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 11:26:58,232 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 241 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-09-16 11:26:58,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 352 transitions, 3520 flow [2022-09-16 11:26:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:26:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:26:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 483 transitions. [2022-09-16 11:26:58,234 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-09-16 11:26:58,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 483 transitions. [2022-09-16 11:26:58,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 483 transitions. [2022-09-16 11:26:58,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:26:58,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 483 transitions. [2022-09-16 11:26:58,235 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 11:26:58,236 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 11:26:58,236 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 11:26:58,236 INFO L175 Difference]: Start difference. First operand has 204 places, 178 transitions, 1146 flow. Second operand 5 states and 483 transitions. [2022-09-16 11:26:58,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 352 transitions, 3520 flow [2022-09-16 11:26:58,318 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 11:26:58,425 INFO L231 Difference]: Finished difference. Result has 200 places, 178 transitions, 1025 flow [2022-09-16 11:26:58,425 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 11:26:58,425 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 87 predicate places. [2022-09-16 11:26:58,426 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 178 transitions, 1025 flow [2022-09-16 11:26:58,426 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 11:26:58,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:26:58,426 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 11:26:58,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:26:58,426 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 11:26:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:26:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1668015338, now seen corresponding path program 1 times [2022-09-16 11:26:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:26:58,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308389755] [2022-09-16 11:26:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:26:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:58,485 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 11:26:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:26:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308389755] [2022-09-16 11:26:58,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308389755] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:26:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280921167] [2022-09-16 11:26:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:26:58,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:26:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:26:58,487 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 11:26:58,489 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 11:26:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:26:58,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:26:58,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:26:58,569 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 11:26:58,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:26:58,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280921167] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:26:58,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:26:58,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-09-16 11:26:58,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798232522] [2022-09-16 11:26:58,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:26:58,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:26:58,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:26:58,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:26:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:26:58,570 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2022-09-16 11:26:58,571 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 11:26:58,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:26:58,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2022-09-16 11:26:58,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:00,018 INFO L130 PetriNetUnfolder]: 2705/9377 cut-off events. [2022-09-16 11:27:00,018 INFO L131 PetriNetUnfolder]: For 72399/73762 co-relation queries the response was YES. [2022-09-16 11:27:00,082 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 11:27:00,122 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 127 selfloop transitions, 5 changer transitions 0/235 dead transitions. [2022-09-16 11:27:00,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:27:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:27:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2022-09-16 11:27:00,123 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-09-16 11:27:00,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2022-09-16 11:27:00,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2022-09-16 11:27:00,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:00,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2022-09-16 11:27:00,124 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 11:27:00,125 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 11:27:00,125 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 11:27:00,125 INFO L175 Difference]: Start difference. First operand has 200 places, 178 transitions, 1025 flow. Second operand 4 states and 385 transitions. [2022-09-16 11:27:00,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 235 transitions, 1809 flow [2022-09-16 11:27:00,194 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 11:27:00,196 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:00,197 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 11:27:00,197 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 85 predicate places. [2022-09-16 11:27:00,197 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1012 flow [2022-09-16 11:27:00,197 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 11:27:00,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:00,197 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 11:27:00,214 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 11:27:00,414 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 11:27:00,415 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 11:27:00,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2062810811, now seen corresponding path program 1 times [2022-09-16 11:27:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:00,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185489185] [2022-09-16 11:27:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:00,481 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 11:27:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:00,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185489185] [2022-09-16 11:27:00,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185489185] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:00,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815072470] [2022-09-16 11:27:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:00,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:00,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:00,483 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 11:27:00,484 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 11:27:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:00,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:27:00,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:00,708 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 11:27:00,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:00,924 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 11:27:00,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815072470] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:00,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:00,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-09-16 11:27:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788375066] [2022-09-16 11:27:00,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:27:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:27:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:27:00,926 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:00,928 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 11:27:00,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:00,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:00,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:03,431 INFO L130 PetriNetUnfolder]: 1927/9926 cut-off events. [2022-09-16 11:27:03,431 INFO L131 PetriNetUnfolder]: For 181103/182087 co-relation queries the response was YES. [2022-09-16 11:27:03,516 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 11:27:03,550 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 109 selfloop transitions, 157 changer transitions 0/373 dead transitions. [2022-09-16 11:27:03,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-16 11:27:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-09-16 11:27:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4549 transitions. [2022-09-16 11:27:03,554 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8790338164251208 [2022-09-16 11:27:03,554 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4549 transitions. [2022-09-16 11:27:03,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4549 transitions. [2022-09-16 11:27:03,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:03,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4549 transitions. [2022-09-16 11:27:03,560 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 11:27:03,565 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 11:27:03,566 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 11:27:03,566 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1012 flow. Second operand 45 states and 4549 transitions. [2022-09-16 11:27:03,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 373 transitions, 2950 flow [2022-09-16 11:27:03,640 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 11:27:03,644 INFO L231 Difference]: Finished difference. Result has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:03,644 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 11:27:03,645 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 144 predicate places. [2022-09-16 11:27:03,645 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 280 transitions, 2573 flow [2022-09-16 11:27:03,645 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 11:27:03,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:03,646 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 11:27:03,663 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 11:27:03,862 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 11:27:03,862 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 11:27:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 945577465, now seen corresponding path program 2 times [2022-09-16 11:27:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:03,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901063024] [2022-09-16 11:27:03,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:03,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:03,968 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 11:27:03,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:03,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901063024] [2022-09-16 11:27:03,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901063024] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:03,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178340364] [2022-09-16 11:27:03,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:03,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:03,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:03,970 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 11:27:03,996 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 11:27:04,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:04,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:04,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:27:04,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:04,242 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 11:27:04,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:04,425 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 11:27:04,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178340364] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:04,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:04,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-09-16 11:27:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123317507] [2022-09-16 11:27:04,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:27:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:27:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:27:04,428 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 115 [2022-09-16 11:27:04,429 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 11:27:04,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:04,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 115 [2022-09-16 11:27:04,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:13,299 INFO L130 PetriNetUnfolder]: 11112/40437 cut-off events. [2022-09-16 11:27:13,299 INFO L131 PetriNetUnfolder]: For 291174/296768 co-relation queries the response was YES. [2022-09-16 11:27:14,289 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 11:27:14,624 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3408 dead transitions. [2022-09-16 11:27:14,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-16 11:27:14,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-16 11:27:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2234 transitions. [2022-09-16 11:27:14,633 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8446124763705104 [2022-09-16 11:27:14,633 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2234 transitions. [2022-09-16 11:27:14,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2234 transitions. [2022-09-16 11:27:14,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:14,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2234 transitions. [2022-09-16 11:27:14,636 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 11:27:14,638 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 11:27:14,638 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 11:27:14,638 INFO L175 Difference]: Start difference. First operand has 257 places, 280 transitions, 2573 flow. Second operand 23 states and 2234 transitions. [2022-09-16 11:27:14,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 3408 transitions, 47553 flow [2022-09-16 11:27:15,068 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 11:27:15,090 INFO L231 Difference]: Finished difference. Result has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:15,091 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 11:27:15,091 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 156 predicate places. [2022-09-16 11:27:15,091 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 293 transitions, 2475 flow [2022-09-16 11:27:15,092 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 11:27:15,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:15,092 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 11:27:15,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:15,302 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 11:27:15,303 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 11:27:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:15,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1359729348, now seen corresponding path program 2 times [2022-09-16 11:27:15,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:15,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545329273] [2022-09-16 11:27:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:15,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:15,383 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 11:27:15,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:15,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545329273] [2022-09-16 11:27:15,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545329273] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:15,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174787934] [2022-09-16 11:27:15,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:27:15,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:15,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:15,385 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 11:27:15,386 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 11:27:15,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:27:15,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:27:15,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:27:15,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:15,675 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 11:27:15,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:15,841 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 11:27:15,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174787934] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:15,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:15,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:27:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974879538] [2022-09-16 11:27:15,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:15,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:27:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:27:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:27:15,844 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:15,845 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 11:27:15,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:15,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:15,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:26,337 INFO L130 PetriNetUnfolder]: 7408/38904 cut-off events. [2022-09-16 11:27:26,338 INFO L131 PetriNetUnfolder]: For 1432058/1435750 co-relation queries the response was YES. [2022-09-16 11:27:27,220 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 11:27:27,369 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 157 selfloop transitions, 284 changer transitions 0/561 dead transitions. [2022-09-16 11:27:27,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-16 11:27:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-09-16 11:27:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5540 transitions. [2022-09-16 11:27:27,373 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8758893280632412 [2022-09-16 11:27:27,373 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5540 transitions. [2022-09-16 11:27:27,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5540 transitions. [2022-09-16 11:27:27,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:27,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5540 transitions. [2022-09-16 11:27:27,379 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 11:27:27,388 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 11:27:27,389 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 11:27:27,389 INFO L175 Difference]: Start difference. First operand has 269 places, 293 transitions, 2475 flow. Second operand 55 states and 5540 transitions. [2022-09-16 11:27:27,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 561 transitions, 5668 flow [2022-09-16 11:27:28,936 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 11:27:28,942 INFO L231 Difference]: Finished difference. Result has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:28,942 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 11:27:28,943 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 213 predicate places. [2022-09-16 11:27:28,943 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 441 transitions, 4969 flow [2022-09-16 11:27:28,943 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 11:27:28,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:27:28,944 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 11:27:28,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:27:29,160 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 11:27:29,161 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 11:27:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:27:29,161 INFO L85 PathProgramCache]: Analyzing trace with hash -500977530, now seen corresponding path program 1 times [2022-09-16 11:27:29,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:27:29,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110572083] [2022-09-16 11:27:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:29,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:27:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:29,227 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 11:27:29,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:27:29,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110572083] [2022-09-16 11:27:29,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110572083] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:27:29,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481857340] [2022-09-16 11:27:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:27:29,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:27:29,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:27:29,229 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 11:27:29,230 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 11:27:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:27:29,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:27:29,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:27:29,444 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 11:27:29,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:27:29,576 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 11:27:29,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481857340] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:27:29,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:27:29,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-09-16 11:27:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395465789] [2022-09-16 11:27:29,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:27:29,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 11:27:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:27:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 11:27:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:27:29,578 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:27:29,580 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 11:27:29,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:27:29,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:27:29,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:27:50,088 INFO L130 PetriNetUnfolder]: 12933/71744 cut-off events. [2022-09-16 11:27:50,089 INFO L131 PetriNetUnfolder]: For 4069239/4074489 co-relation queries the response was YES. [2022-09-16 11:27:52,573 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 11:27:52,883 INFO L137 encePairwiseOnDemand]: 107/115 looper letters, 247 selfloop transitions, 515 changer transitions 0/882 dead transitions. [2022-09-16 11:27:52,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 882 transitions, 12453 flow [2022-09-16 11:27:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:27:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-09-16 11:27:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5841 transitions. [2022-09-16 11:27:52,889 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875712143928036 [2022-09-16 11:27:52,889 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5841 transitions. [2022-09-16 11:27:52,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5841 transitions. [2022-09-16 11:27:52,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:27:52,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5841 transitions. [2022-09-16 11:27:52,900 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 11:27:52,906 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 11:27:52,907 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 11:27:52,907 INFO L175 Difference]: Start difference. First operand has 326 places, 441 transitions, 4969 flow. Second operand 58 states and 5841 transitions. [2022-09-16 11:27:52,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 882 transitions, 12453 flow [2022-09-16 11:28:00,169 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 11:28:00,179 INFO L231 Difference]: Finished difference. Result has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:00,179 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 11:28:00,180 INFO L287 CegarLoopForPetriNet]: 113 programPoint places, 269 predicate places. [2022-09-16 11:28:00,180 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 760 transitions, 11011 flow [2022-09-16 11:28:00,180 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 11:28:00,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:28:00,180 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 11:28:00,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:28:00,397 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 11:28:00,397 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 11:28:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:28:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash 769685556, now seen corresponding path program 2 times [2022-09-16 11:28:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:28:00,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128928484] [2022-09-16 11:28:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:28:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:28:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:28:00,486 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 11:28:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:28:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128928484] [2022-09-16 11:28:00,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128928484] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:28:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542180918] [2022-09-16 11:28:00,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:28:00,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:28:00,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:28:00,487 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 11:28:00,488 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 11:28:00,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:28:00,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:28:00,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:28:00,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:28:00,750 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 11:28:00,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:28:00,927 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 11:28:00,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542180918] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:28:00,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:28:00,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-09-16 11:28:00,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503952814] [2022-09-16 11:28:00,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:28:00,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:28:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:28:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:28:00,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=565, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:28:00,930 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2022-09-16 11:28:00,931 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 11:28:00,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:28:00,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2022-09-16 11:28:00,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand