/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-50.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:06:55,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:06:55,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:06:55,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:06:55,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:06:55,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:06:55,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:06:55,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:06:55,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:06:55,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:06:55,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:06:55,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:06:55,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:06:55,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:06:55,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:06:55,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:06:55,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:06:55,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:06:55,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:06:55,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:06:55,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:06:55,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:06:55,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:06:55,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:06:55,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:06:55,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:06:55,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:06:55,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:06:55,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:06:55,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:06:55,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:06:55,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:06:55,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:06:55,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:06:55,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:06:55,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:06:55,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:06:55,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:06:55,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:06:55,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:06:55,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:06:55,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 12:06:55,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:06:55,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:06:55,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:06:55,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:06:55,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:06:55,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:06:55,647 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:06:55,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:06:55,647 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:06:55,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:06:55,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:06:55,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:06:55,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:06:55,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:06:55,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:06:55,648 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:06:55,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:06:55,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:06:55,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:06:55,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:06:55,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:06:55,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:06:55,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:06:55,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:06:55,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:06:55,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:06:55,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:06:55,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:06:55,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:06:55,652 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:06:55,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:06:55,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:06:55,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:06:55,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:06:55,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:06:55,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:06:55,881 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:06:55,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-50.i [2022-09-16 12:06:55,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde2f9217/4f9bebabdc344164ae306acfe7eb9f8d/FLAG8b3c28326 [2022-09-16 12:06:56,414 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:06:56,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-50.i [2022-09-16 12:06:56,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde2f9217/4f9bebabdc344164ae306acfe7eb9f8d/FLAG8b3c28326 [2022-09-16 12:06:56,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde2f9217/4f9bebabdc344164ae306acfe7eb9f8d [2022-09-16 12:06:56,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:06:56,730 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:06:56,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:06:56,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:06:56,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:06:56,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:06:56" (1/1) ... [2022-09-16 12:06:56,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5299349a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:56, skipping insertion in model container [2022-09-16 12:06:56,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:06:56" (1/1) ... [2022-09-16 12:06:56,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:06:56,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:06:57,077 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-50.i[30190,30203] [2022-09-16 12:06:57,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:06:57,102 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:06:57,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-50.i[30190,30203] [2022-09-16 12:06:57,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:06:57,171 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:06:57,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57 WrapperNode [2022-09-16 12:06:57,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:06:57,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:06:57,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:06:57,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:06:57,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,223 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-09-16 12:06:57,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:06:57,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:06:57,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:06:57,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:06:57,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:06:57,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:06:57,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:06:57,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:06:57,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (1/1) ... [2022-09-16 12:06:57,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:06:57,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:06:57,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 12:06:57,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 12:06:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:06:57,329 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-09-16 12:06:57,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-09-16 12:06:57,330 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 12:06:57,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:06:57,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:06:57,332 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 12:06:57,426 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:06:57,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:06:57,624 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:06:57,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:06:57,630 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 12:06:57,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:06:57 BoogieIcfgContainer [2022-09-16 12:06:57,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:06:57,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:06:57,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:06:57,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:06:57,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:06:56" (1/3) ... [2022-09-16 12:06:57,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:06:57, skipping insertion in model container [2022-09-16 12:06:57,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:06:57" (2/3) ... [2022-09-16 12:06:57,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:06:57, skipping insertion in model container [2022-09-16 12:06:57,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:06:57" (3/3) ... [2022-09-16 12:06:57,640 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-50.i [2022-09-16 12:06:57,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:06:57,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 12:06:57,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:06:57,718 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 12:06:57,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-09-16 12:06:57,812 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-09-16 12:06:57,812 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-16 12:06:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 750 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-09-16 12:06:57,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 106 transitions, 234 flow [2022-09-16 12:06:57,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 106 transitions, 234 flow [2022-09-16 12:06:57,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:06:57,854 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;@299bca74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:06:57,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:06:57,875 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-09-16 12:06:57,875 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:06:57,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:57,876 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] [2022-09-16 12:06:57,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:06:57,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1743683162, now seen corresponding path program 1 times [2022-09-16 12:06:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:57,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501981864] [2022-09-16 12:06:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:06:58,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:58,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501981864] [2022-09-16 12:06:58,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501981864] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:58,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:06:58,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:06:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125452435] [2022-09-16 12:06:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:58,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:06:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:06:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:06:58,190 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 106 [2022-09-16 12:06:58,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:58,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:58,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 106 [2022-09-16 12:06:58,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:58,367 INFO L130 PetriNetUnfolder]: 2/140 cut-off events. [2022-09-16 12:06:58,367 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 12:06:58,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 140 events. 2/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 0 based on Foata normal form. 18/141 useless extension candidates. Maximal degree in co-relation 33. Up to 30 conditions per place. [2022-09-16 12:06:58,369 INFO L137 encePairwiseOnDemand]: 85/106 looper letters, 33 selfloop transitions, 9 changer transitions 14/110 dead transitions. [2022-09-16 12:06:58,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 110 transitions, 342 flow [2022-09-16 12:06:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:06:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:06:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2022-09-16 12:06:58,383 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7132075471698113 [2022-09-16 12:06:58,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2022-09-16 12:06:58,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2022-09-16 12:06:58,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:58,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2022-09-16 12:06:58,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:58,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:58,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:58,400 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 234 flow. Second operand 5 states and 378 transitions. [2022-09-16 12:06:58,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 110 transitions, 342 flow [2022-09-16 12:06:58,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:06:58,407 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 227 flow [2022-09-16 12:06:58,409 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2022-09-16 12:06:58,412 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2022-09-16 12:06:58,412 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 227 flow [2022-09-16 12:06:58,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:58,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:58,413 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] [2022-09-16 12:06:58,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:06:58,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:06:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash 888287988, now seen corresponding path program 1 times [2022-09-16 12:06:58,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:58,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572829096] [2022-09-16 12:06:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:06:58,439 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:06:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:06:58,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:06:58,506 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:06:58,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:06:58,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:06:58,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:06:58,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:06:58,511 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:06:58,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:06:58,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:06:58,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:06:58,512 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:06:58,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:06:58,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 12:06:58,514 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-16 12:06:58,517 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:06:58,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-09-16 12:06:58,546 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-09-16 12:06:58,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-09-16 12:06:58,654 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-09-16 12:06:58,654 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-09-16 12:06:58,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4125 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-09-16 12:06:58,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 124 transitions, 296 flow [2022-09-16 12:06:58,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 124 transitions, 296 flow [2022-09-16 12:06:58,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:06:58,674 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;@299bca74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:06:58,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:06:58,685 INFO L130 PetriNetUnfolder]: 4/57 cut-off events. [2022-09-16 12:06:58,686 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:06:58,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:58,686 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] [2022-09-16 12:06:58,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:06:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2118885228, now seen corresponding path program 1 times [2022-09-16 12:06:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054037141] [2022-09-16 12:06:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:58,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:06:58,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:58,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054037141] [2022-09-16 12:06:58,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054037141] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:58,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:06:58,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:06:58,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466709867] [2022-09-16 12:06:58,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:58,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:06:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:06:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:06:58,767 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-09-16 12:06:58,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:58,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:58,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-09-16 12:06:58,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:58,999 INFO L130 PetriNetUnfolder]: 58/745 cut-off events. [2022-09-16 12:06:59,000 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-09-16 12:06:59,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 745 events. 58/745 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4086 event pairs, 0 based on Foata normal form. 244/867 useless extension candidates. Maximal degree in co-relation 595. Up to 212 conditions per place. [2022-09-16 12:06:59,004 INFO L137 encePairwiseOnDemand]: 102/124 looper letters, 59 selfloop transitions, 10 changer transitions 8/143 dead transitions. [2022-09-16 12:06:59,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 143 transitions, 498 flow [2022-09-16 12:06:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:06:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:06:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2022-09-16 12:06:59,011 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7306451612903225 [2022-09-16 12:06:59,011 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2022-09-16 12:06:59,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2022-09-16 12:06:59,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:59,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2022-09-16 12:06:59,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,018 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,018 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 296 flow. Second operand 5 states and 453 transitions. [2022-09-16 12:06:59,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 143 transitions, 498 flow [2022-09-16 12:06:59,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 143 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:06:59,025 INFO L231 Difference]: Finished difference. Result has 124 places, 114 transitions, 330 flow [2022-09-16 12:06:59,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=124, PETRI_TRANSITIONS=114} [2022-09-16 12:06:59,026 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, 5 predicate places. [2022-09-16 12:06:59,026 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 114 transitions, 330 flow [2022-09-16 12:06:59,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:59,027 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] [2022-09-16 12:06:59,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 12:06:59,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:06:59,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash 752407917, now seen corresponding path program 1 times [2022-09-16 12:06:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:59,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907488773] [2022-09-16 12:06:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:06:59,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:59,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907488773] [2022-09-16 12:06:59,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907488773] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:59,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:06:59,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:06:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581766427] [2022-09-16 12:06:59,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:59,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:06:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:06:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:06:59,127 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-09-16 12:06:59,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 114 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:59,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-09-16 12:06:59,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:59,262 INFO L130 PetriNetUnfolder]: 58/656 cut-off events. [2022-09-16 12:06:59,262 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-09-16 12:06:59,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 656 events. 58/656 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3378 event pairs, 16 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 695. Up to 264 conditions per place. [2022-09-16 12:06:59,267 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 31 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2022-09-16 12:06:59,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 117 transitions, 436 flow [2022-09-16 12:06:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:06:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:06:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2022-09-16 12:06:59,269 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6629032258064517 [2022-09-16 12:06:59,270 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2022-09-16 12:06:59,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2022-09-16 12:06:59,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:59,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2022-09-16 12:06:59,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,273 INFO L175 Difference]: Start difference. First operand has 124 places, 114 transitions, 330 flow. Second operand 5 states and 411 transitions. [2022-09-16 12:06:59,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 117 transitions, 436 flow [2022-09-16 12:06:59,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 117 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:06:59,278 INFO L231 Difference]: Finished difference. Result has 119 places, 117 transitions, 390 flow [2022-09-16 12:06:59,279 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=390, PETRI_PLACES=119, PETRI_TRANSITIONS=117} [2022-09-16 12:06:59,280 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-09-16 12:06:59,280 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 117 transitions, 390 flow [2022-09-16 12:06:59,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:59,281 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] [2022-09-16 12:06:59,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 12:06:59,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:06:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:06:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1849809328, now seen corresponding path program 1 times [2022-09-16 12:06:59,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:06:59,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675486046] [2022-09-16 12:06:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:59,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:06:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:06:59,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:06:59,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675486046] [2022-09-16 12:06:59,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675486046] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:06:59,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864051386] [2022-09-16 12:06:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:06:59,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:06:59,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:06:59,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:06:59,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 12:06:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:06:59,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:06:59,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:06:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:06:59,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:06:59,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864051386] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:06:59,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:06:59,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:06:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514985873] [2022-09-16 12:06:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:06:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:06:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:06:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:06:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:06:59,556 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-09-16 12:06:59,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 117 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:06:59,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-09-16 12:06:59,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:06:59,792 INFO L130 PetriNetUnfolder]: 58/655 cut-off events. [2022-09-16 12:06:59,792 INFO L131 PetriNetUnfolder]: For 408/408 co-relation queries the response was YES. [2022-09-16 12:06:59,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 655 events. 58/655 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3361 event pairs, 0 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 777. Up to 167 conditions per place. [2022-09-16 12:06:59,798 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 53 selfloop transitions, 14 changer transitions 0/133 dead transitions. [2022-09-16 12:06:59,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 133 transitions, 578 flow [2022-09-16 12:06:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:06:59,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:06:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2022-09-16 12:06:59,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6670506912442397 [2022-09-16 12:06:59,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2022-09-16 12:06:59,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2022-09-16 12:06:59,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:06:59,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2022-09-16 12:06:59,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,806 INFO L175 Difference]: Start difference. First operand has 119 places, 117 transitions, 390 flow. Second operand 7 states and 579 transitions. [2022-09-16 12:06:59,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 133 transitions, 578 flow [2022-09-16 12:06:59,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 133 transitions, 554 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:06:59,820 INFO L231 Difference]: Finished difference. Result has 121 places, 116 transitions, 390 flow [2022-09-16 12:06:59,820 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=121, PETRI_TRANSITIONS=116} [2022-09-16 12:06:59,821 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, 2 predicate places. [2022-09-16 12:06:59,821 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 390 flow [2022-09-16 12:06:59,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:06:59,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:06:59,822 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] [2022-09-16 12:06:59,854 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 12:07:00,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:00,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:00,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:00,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1055487924, now seen corresponding path program 1 times [2022-09-16 12:07:00,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:00,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109651522] [2022-09-16 12:07:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:00,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:00,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109651522] [2022-09-16 12:07:00,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109651522] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700196753] [2022-09-16 12:07:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:00,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:00,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:00,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:07:00,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 12:07:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:00,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:00,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:00,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700196753] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:00,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:00,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:00,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696496224] [2022-09-16 12:07:00,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:00,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:00,275 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 124 [2022-09-16 12:07:00,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 390 flow. Second operand has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:00,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:00,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 124 [2022-09-16 12:07:00,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:00,345 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-09-16 12:07:00,345 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-09-16 12:07:00,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 61 events. 0/61 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-09-16 12:07:00,346 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 14 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2022-09-16 12:07:00,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 55 transitions, 206 flow [2022-09-16 12:07:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:07:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:07:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 680 transitions. [2022-09-16 12:07:00,348 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6093189964157706 [2022-09-16 12:07:00,348 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 680 transitions. [2022-09-16 12:07:00,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 680 transitions. [2022-09-16 12:07:00,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:00,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 680 transitions. [2022-09-16 12:07:00,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.55555555555556) internal successors, (680), 9 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 12:07:00,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:00,353 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:00,353 INFO L175 Difference]: Start difference. First operand has 121 places, 116 transitions, 390 flow. Second operand 9 states and 680 transitions. [2022-09-16 12:07:00,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 55 transitions, 206 flow [2022-09-16 12:07:00,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 189 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-09-16 12:07:00,355 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 149 flow [2022-09-16 12:07:00,356 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2022-09-16 12:07:00,356 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, -50 predicate places. [2022-09-16 12:07:00,356 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 149 flow [2022-09-16 12:07:00,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 76.5) internal successors, (765), 10 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:00,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:00,357 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:07:00,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 12:07:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-16 12:07:00,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash 303049927, now seen corresponding path program 1 times [2022-09-16 12:07:00,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:00,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784341622] [2022-09-16 12:07:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:00,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:07:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:00,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:07:00,614 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:07:00,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:07:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:07:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:07:00,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:07:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:07:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:07:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:07:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:07:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:07:00,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:07:00,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 12:07:00,615 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 12:07:00,616 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:07:00,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-09-16 12:07:00,637 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-09-16 12:07:00,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-09-16 12:07:00,917 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-09-16 12:07:00,918 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-09-16 12:07:00,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19908 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-09-16 12:07:00,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 362 flow [2022-09-16 12:07:00,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 362 flow [2022-09-16 12:07:00,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:00,950 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;@299bca74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:00,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:00,953 INFO L130 PetriNetUnfolder]: 4/57 cut-off events. [2022-09-16 12:07:00,954 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:00,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:00,954 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] [2022-09-16 12:07:00,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:00,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1339417476, now seen corresponding path program 1 times [2022-09-16 12:07:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:00,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881081556] [2022-09-16 12:07:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:00,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881081556] [2022-09-16 12:07:00,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881081556] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:00,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:00,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552348950] [2022-09-16 12:07:00,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:00,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:00,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:00,985 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-09-16 12:07:00,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:00,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:00,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-09-16 12:07:00,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:01,494 INFO L130 PetriNetUnfolder]: 444/3258 cut-off events. [2022-09-16 12:07:01,495 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-09-16 12:07:01,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 3258 events. 444/3258 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 27833 event pairs, 10 based on Foata normal form. 1641/4360 useless extension candidates. Maximal degree in co-relation 2726. Up to 1064 conditions per place. [2022-09-16 12:07:01,520 INFO L137 encePairwiseOnDemand]: 119/142 looper letters, 69 selfloop transitions, 10 changer transitions 8/163 dead transitions. [2022-09-16 12:07:01,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 163 transitions, 600 flow [2022-09-16 12:07:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:01,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 515 transitions. [2022-09-16 12:07:01,523 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7253521126760564 [2022-09-16 12:07:01,523 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 515 transitions. [2022-09-16 12:07:01,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 515 transitions. [2022-09-16 12:07:01,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:01,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 515 transitions. [2022-09-16 12:07:01,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:01,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:01,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:01,529 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 362 flow. Second operand 5 states and 515 transitions. [2022-09-16 12:07:01,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 163 transitions, 600 flow [2022-09-16 12:07:01,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 163 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:01,534 INFO L231 Difference]: Finished difference. Result has 140 places, 130 transitions, 392 flow [2022-09-16 12:07:01,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=140, PETRI_TRANSITIONS=130} [2022-09-16 12:07:01,535 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 4 predicate places. [2022-09-16 12:07:01,535 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 130 transitions, 392 flow [2022-09-16 12:07:01,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:01,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:01,536 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] [2022-09-16 12:07:01,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 12:07:01,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash 768055441, now seen corresponding path program 1 times [2022-09-16 12:07:01,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:01,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899678334] [2022-09-16 12:07:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:01,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:07:01,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:01,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899678334] [2022-09-16 12:07:01,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899678334] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:01,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:01,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096826398] [2022-09-16 12:07:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:01,573 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-09-16 12:07:01,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 130 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:01,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:01,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-09-16 12:07:01,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:02,006 INFO L130 PetriNetUnfolder]: 444/2800 cut-off events. [2022-09-16 12:07:02,006 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-09-16 12:07:02,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 2800 events. 444/2800 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22543 event pairs, 109 based on Foata normal form. 2/2399 useless extension candidates. Maximal degree in co-relation 2862. Up to 1267 conditions per place. [2022-09-16 12:07:02,036 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 37 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2022-09-16 12:07:02,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 510 flow [2022-09-16 12:07:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:02,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2022-09-16 12:07:02,038 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6577464788732394 [2022-09-16 12:07:02,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2022-09-16 12:07:02,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2022-09-16 12:07:02,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:02,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2022-09-16 12:07:02,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,042 INFO L175 Difference]: Start difference. First operand has 140 places, 130 transitions, 392 flow. Second operand 5 states and 467 transitions. [2022-09-16 12:07:02,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 510 flow [2022-09-16 12:07:02,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:07:02,047 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 452 flow [2022-09-16 12:07:02,047 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2022-09-16 12:07:02,048 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, -1 predicate places. [2022-09-16 12:07:02,048 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 452 flow [2022-09-16 12:07:02,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:02,048 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] [2022-09-16 12:07:02,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 12:07:02,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:02,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1960084584, now seen corresponding path program 1 times [2022-09-16 12:07:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:02,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780050105] [2022-09-16 12:07:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:02,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780050105] [2022-09-16 12:07:02,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780050105] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:02,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293519774] [2022-09-16 12:07:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:02,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:02,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:07:02,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 12:07:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:02,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:07:02,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:02,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:07:02,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293519774] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:02,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:07:02,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:07:02,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275076091] [2022-09-16 12:07:02,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:02,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:07:02,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:07:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:07:02,250 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-09-16 12:07:02,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 133 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:02,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-09-16 12:07:02,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:02,689 INFO L130 PetriNetUnfolder]: 444/2798 cut-off events. [2022-09-16 12:07:02,689 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2022-09-16 12:07:02,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 2798 events. 444/2798 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22509 event pairs, 10 based on Foata normal form. 2/2397 useless extension candidates. Maximal degree in co-relation 3164. Up to 909 conditions per place. [2022-09-16 12:07:02,727 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 63 selfloop transitions, 14 changer transitions 0/153 dead transitions. [2022-09-16 12:07:02,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 153 transitions, 680 flow [2022-09-16 12:07:02,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:07:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:07:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2022-09-16 12:07:02,730 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6629778672032193 [2022-09-16 12:07:02,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 659 transitions. [2022-09-16 12:07:02,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 659 transitions. [2022-09-16 12:07:02,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:02,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 659 transitions. [2022-09-16 12:07:02,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,734 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,734 INFO L175 Difference]: Start difference. First operand has 135 places, 133 transitions, 452 flow. Second operand 7 states and 659 transitions. [2022-09-16 12:07:02,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 153 transitions, 680 flow [2022-09-16 12:07:02,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 153 transitions, 656 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:07:02,741 INFO L231 Difference]: Finished difference. Result has 137 places, 132 transitions, 452 flow [2022-09-16 12:07:02,741 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=137, PETRI_TRANSITIONS=132} [2022-09-16 12:07:02,742 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2022-09-16 12:07:02,742 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 132 transitions, 452 flow [2022-09-16 12:07:02,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:02,742 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] [2022-09-16 12:07:02,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 12:07:02,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:02,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:02,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash -951218575, now seen corresponding path program 1 times [2022-09-16 12:07:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:02,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019561616] [2022-09-16 12:07:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:03,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019561616] [2022-09-16 12:07:03,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019561616] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:03,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932603784] [2022-09-16 12:07:03,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:03,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:03,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:03,009 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:07:03,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 12:07:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:03,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:03,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:03,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:03,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932603784] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:03,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:03,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:03,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269817721] [2022-09-16 12:07:03,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:03,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:03,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:03,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:03,152 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 142 [2022-09-16 12:07:03,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 132 transitions, 452 flow. Second operand has 10 states, 10 states have (on average 86.5) internal successors, (865), 10 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:03,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 142 [2022-09-16 12:07:03,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:03,592 INFO L130 PetriNetUnfolder]: 423/2506 cut-off events. [2022-09-16 12:07:03,592 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-09-16 12:07:03,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 2506 events. 423/2506 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 20043 event pairs, 35 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 5367. Up to 482 conditions per place. [2022-09-16 12:07:03,613 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 64 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2022-09-16 12:07:03,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 732 flow [2022-09-16 12:07:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 12:07:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 12:07:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 917 transitions. [2022-09-16 12:07:03,616 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.645774647887324 [2022-09-16 12:07:03,616 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 917 transitions. [2022-09-16 12:07:03,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 917 transitions. [2022-09-16 12:07:03,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:03,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 917 transitions. [2022-09-16 12:07:03,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,622 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,622 INFO L175 Difference]: Start difference. First operand has 137 places, 132 transitions, 452 flow. Second operand 10 states and 917 transitions. [2022-09-16 12:07:03,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 732 flow [2022-09-16 12:07:03,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 161 transitions, 714 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:03,630 INFO L231 Difference]: Finished difference. Result has 146 places, 136 transitions, 532 flow [2022-09-16 12:07:03,630 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=146, PETRI_TRANSITIONS=136} [2022-09-16 12:07:03,631 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 10 predicate places. [2022-09-16 12:07:03,631 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 136 transitions, 532 flow [2022-09-16 12:07:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.5) internal successors, (865), 10 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:03,631 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:07:03,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 12:07:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:03,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:03,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash 643974405, now seen corresponding path program 1 times [2022-09-16 12:07:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:03,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718809660] [2022-09-16 12:07:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:03,866 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:07:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:03,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:07:03,888 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:07:03,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:07:03,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:07:03,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:07:03,888 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:07:03,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:07:03,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:07:03,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:07:03,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:07:03,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:07:03,889 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:07:03,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 12:07:03,889 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 12:07:03,890 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:07:03,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-09-16 12:07:03,929 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-09-16 12:07:03,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-09-16 12:07:05,248 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-09-16 12:07:05,248 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-09-16 12:07:05,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 100963 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-09-16 12:07:05,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 160 transitions, 432 flow [2022-09-16 12:07:05,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 160 transitions, 432 flow [2022-09-16 12:07:05,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:05,390 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;@299bca74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:05,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:05,394 INFO L130 PetriNetUnfolder]: 4/60 cut-off events. [2022-09-16 12:07:05,394 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:05,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:05,394 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] [2022-09-16 12:07:05,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 212880878, now seen corresponding path program 1 times [2022-09-16 12:07:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:05,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265279949] [2022-09-16 12:07:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:05,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265279949] [2022-09-16 12:07:05,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265279949] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:05,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:05,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681504622] [2022-09-16 12:07:05,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:05,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:05,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:05,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:05,479 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-09-16 12:07:05,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 160 transitions, 432 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 12:07:05,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:05,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-09-16 12:07:05,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:07,257 INFO L130 PetriNetUnfolder]: 2570/13559 cut-off events. [2022-09-16 12:07:07,258 INFO L131 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2022-09-16 12:07:07,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23845 conditions, 13559 events. 2570/13559 cut-off events. For 3152/3152 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 147835 event pairs, 152 based on Foata normal form. 8872/20287 useless extension candidates. Maximal degree in co-relation 11662. Up to 4858 conditions per place. [2022-09-16 12:07:07,339 INFO L137 encePairwiseOnDemand]: 136/160 looper letters, 79 selfloop transitions, 10 changer transitions 8/183 dead transitions. [2022-09-16 12:07:07,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 183 transitions, 706 flow [2022-09-16 12:07:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2022-09-16 12:07:07,343 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.72125 [2022-09-16 12:07:07,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2022-09-16 12:07:07,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2022-09-16 12:07:07,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:07,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2022-09-16 12:07:07,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:07,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:07,346 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:07,346 INFO L175 Difference]: Start difference. First operand has 153 places, 160 transitions, 432 flow. Second operand 5 states and 577 transitions. [2022-09-16 12:07:07,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 183 transitions, 706 flow [2022-09-16 12:07:07,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 183 transitions, 706 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:07,353 INFO L231 Difference]: Finished difference. Result has 156 places, 146 transitions, 458 flow [2022-09-16 12:07:07,354 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=156, PETRI_TRANSITIONS=146} [2022-09-16 12:07:07,355 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, 3 predicate places. [2022-09-16 12:07:07,355 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 146 transitions, 458 flow [2022-09-16 12:07:07,355 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 12:07:07,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:07,356 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] [2022-09-16 12:07:07,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 12:07:07,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1027880071, now seen corresponding path program 1 times [2022-09-16 12:07:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:07,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936483127] [2022-09-16 12:07:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:07:07,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:07,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936483127] [2022-09-16 12:07:07,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936483127] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:07,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:07,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845574920] [2022-09-16 12:07:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:07,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:07,390 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-09-16 12:07:07,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 146 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:07,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:07,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-09-16 12:07:07,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:08,953 INFO L130 PetriNetUnfolder]: 2570/11580 cut-off events. [2022-09-16 12:07:08,954 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2022-09-16 12:07:08,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23311 conditions, 11580 events. 2570/11580 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118690 event pairs, 618 based on Foata normal form. 3/9967 useless extension candidates. Maximal degree in co-relation 12092. Up to 5766 conditions per place. [2022-09-16 12:07:09,041 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 43 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2022-09-16 12:07:09,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 149 transitions, 588 flow [2022-09-16 12:07:09,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 523 transitions. [2022-09-16 12:07:09,046 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.65375 [2022-09-16 12:07:09,046 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 523 transitions. [2022-09-16 12:07:09,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 523 transitions. [2022-09-16 12:07:09,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:09,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 523 transitions. [2022-09-16 12:07:09,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:09,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:09,049 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:09,049 INFO L175 Difference]: Start difference. First operand has 156 places, 146 transitions, 458 flow. Second operand 5 states and 523 transitions. [2022-09-16 12:07:09,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 149 transitions, 588 flow [2022-09-16 12:07:09,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 149 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:07:09,061 INFO L231 Difference]: Finished difference. Result has 151 places, 149 transitions, 518 flow [2022-09-16 12:07:09,061 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=151, PETRI_TRANSITIONS=149} [2022-09-16 12:07:09,062 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, -2 predicate places. [2022-09-16 12:07:09,062 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 149 transitions, 518 flow [2022-09-16 12:07:09,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:09,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:09,062 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] [2022-09-16 12:07:09,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 12:07:09,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:09,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1799511808, now seen corresponding path program 1 times [2022-09-16 12:07:09,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:09,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310332143] [2022-09-16 12:07:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:09,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:09,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:09,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310332143] [2022-09-16 12:07:09,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310332143] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:09,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706438068] [2022-09-16 12:07:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:09,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:09,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:09,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:07:09,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 12:07:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:09,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:07:09,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:09,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:07:09,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706438068] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:09,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:07:09,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:07:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533107721] [2022-09-16 12:07:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:09,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:07:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:09,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:07:09,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:07:09,251 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-09-16 12:07:09,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 518 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 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 12:07:09,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:09,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-09-16 12:07:09,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:10,966 INFO L130 PetriNetUnfolder]: 2570/11577 cut-off events. [2022-09-16 12:07:10,966 INFO L131 PetriNetUnfolder]: For 8768/8768 co-relation queries the response was YES. [2022-09-16 12:07:11,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25663 conditions, 11577 events. 2570/11577 cut-off events. For 8768/8768 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118732 event pairs, 152 based on Foata normal form. 3/9964 useless extension candidates. Maximal degree in co-relation 13262. Up to 4303 conditions per place. [2022-09-16 12:07:11,219 INFO L137 encePairwiseOnDemand]: 147/160 looper letters, 73 selfloop transitions, 14 changer transitions 0/173 dead transitions. [2022-09-16 12:07:11,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 173 transitions, 786 flow [2022-09-16 12:07:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:07:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:07:11,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 739 transitions. [2022-09-16 12:07:11,223 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6598214285714286 [2022-09-16 12:07:11,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 739 transitions. [2022-09-16 12:07:11,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 739 transitions. [2022-09-16 12:07:11,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:11,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 739 transitions. [2022-09-16 12:07:11,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:11,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:11,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:11,228 INFO L175 Difference]: Start difference. First operand has 151 places, 149 transitions, 518 flow. Second operand 7 states and 739 transitions. [2022-09-16 12:07:11,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 173 transitions, 786 flow [2022-09-16 12:07:11,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 173 transitions, 762 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:07:11,242 INFO L231 Difference]: Finished difference. Result has 153 places, 148 transitions, 518 flow [2022-09-16 12:07:11,242 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2022-09-16 12:07:11,243 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, 0 predicate places. [2022-09-16 12:07:11,244 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 518 flow [2022-09-16 12:07:11,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 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 12:07:11,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:11,244 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] [2022-09-16 12:07:11,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 12:07:11,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 12:07:11,462 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:11,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1879016232, now seen corresponding path program 1 times [2022-09-16 12:07:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:11,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528104213] [2022-09-16 12:07:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:11,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528104213] [2022-09-16 12:07:11,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528104213] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:11,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81196549] [2022-09-16 12:07:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:11,501 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:07:11,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 12:07:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:11,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:11,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:11,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:11,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81196549] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:11,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:11,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913737749] [2022-09-16 12:07:11,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:11,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:11,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:11,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:11,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-09-16 12:07:11,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 148 transitions, 518 flow. Second operand has 10 states, 10 states have (on average 96.5) internal successors, (965), 10 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:11,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:11,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-09-16 12:07:11,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:13,076 INFO L130 PetriNetUnfolder]: 2538/11165 cut-off events. [2022-09-16 12:07:13,076 INFO L131 PetriNetUnfolder]: For 7602/7602 co-relation queries the response was YES. [2022-09-16 12:07:13,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24930 conditions, 11165 events. 2538/11165 cut-off events. For 7602/7602 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117287 event pairs, 214 based on Foata normal form. 2/9627 useless extension candidates. Maximal degree in co-relation 13286. Up to 2161 conditions per place. [2022-09-16 12:07:13,160 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 74 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2022-09-16 12:07:13,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 181 transitions, 838 flow [2022-09-16 12:07:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 12:07:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 12:07:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1027 transitions. [2022-09-16 12:07:13,163 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.641875 [2022-09-16 12:07:13,163 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1027 transitions. [2022-09-16 12:07:13,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1027 transitions. [2022-09-16 12:07:13,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:13,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1027 transitions. [2022-09-16 12:07:13,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 102.7) internal successors, (1027), 10 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,169 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,169 INFO L175 Difference]: Start difference. First operand has 153 places, 148 transitions, 518 flow. Second operand 10 states and 1027 transitions. [2022-09-16 12:07:13,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 181 transitions, 838 flow [2022-09-16 12:07:13,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 181 transitions, 820 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:13,186 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 598 flow [2022-09-16 12:07:13,186 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=598, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2022-09-16 12:07:13,188 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, 9 predicate places. [2022-09-16 12:07:13,188 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 598 flow [2022-09-16 12:07:13,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.5) internal successors, (965), 10 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:13,188 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:07:13,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 12:07:13,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 12:07:13,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 736703771, now seen corresponding path program 1 times [2022-09-16 12:07:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:13,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303785374] [2022-09-16 12:07:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:07:13,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:13,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303785374] [2022-09-16 12:07:13,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303785374] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:13,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:13,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691361708] [2022-09-16 12:07:13,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:13,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:13,433 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 160 [2022-09-16 12:07:13,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 598 flow. Second operand has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:13,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 160 [2022-09-16 12:07:13,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:14,676 INFO L130 PetriNetUnfolder]: 2538/11161 cut-off events. [2022-09-16 12:07:14,676 INFO L131 PetriNetUnfolder]: For 14122/14122 co-relation queries the response was YES. [2022-09-16 12:07:14,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27272 conditions, 11161 events. 2538/11161 cut-off events. For 14122/14122 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117340 event pairs, 214 based on Foata normal form. 0/9625 useless extension candidates. Maximal degree in co-relation 14484. Up to 4554 conditions per place. [2022-09-16 12:07:14,784 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 82 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2022-09-16 12:07:14,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 178 transitions, 882 flow [2022-09-16 12:07:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-09-16 12:07:14,786 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.695 [2022-09-16 12:07:14,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-09-16 12:07:14,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-09-16 12:07:14,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:14,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-09-16 12:07:14,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:14,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:14,790 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:14,790 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 598 flow. Second operand 5 states and 556 transitions. [2022-09-16 12:07:14,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 178 transitions, 882 flow [2022-09-16 12:07:14,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 178 transitions, 858 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:14,820 INFO L231 Difference]: Finished difference. Result has 165 places, 154 transitions, 618 flow [2022-09-16 12:07:14,820 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=165, PETRI_TRANSITIONS=154} [2022-09-16 12:07:14,821 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, 12 predicate places. [2022-09-16 12:07:14,821 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 618 flow [2022-09-16 12:07:14,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:14,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:07:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 12:07:14,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:14,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash 887604142, now seen corresponding path program 1 times [2022-09-16 12:07:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:14,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458610057] [2022-09-16 12:07:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:14,842 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:07:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:14,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:07:14,865 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:07:14,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:07:14,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:07:14,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:07:14,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 12:07:14,873 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-09-16 12:07:14,873 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:07:14,874 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-09-16 12:07:14,902 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-09-16 12:07:14,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-09-16 12:07:19,849 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-09-16 12:07:19,849 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-09-16 12:07:20,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54326 conditions, 43900 events. 11372/43900 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 513511 event pairs, 4296 based on Foata normal form. 0/35528 useless extension candidates. Maximal degree in co-relation 26480. Up to 5120 conditions per place. [2022-09-16 12:07:20,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 506 flow [2022-09-16 12:07:20,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 506 flow [2022-09-16 12:07:20,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:20,450 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;@299bca74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:20,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:20,453 INFO L130 PetriNetUnfolder]: 4/61 cut-off events. [2022-09-16 12:07:20,453 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:20,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:20,453 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] [2022-09-16 12:07:20,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1260724566, now seen corresponding path program 1 times [2022-09-16 12:07:20,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:20,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208515582] [2022-09-16 12:07:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:20,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208515582] [2022-09-16 12:07:20,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208515582] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:20,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:20,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349837727] [2022-09-16 12:07:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:20,475 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-09-16 12:07:20,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:20,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:20,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-09-16 12:07:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:27,988 INFO L130 PetriNetUnfolder]: 13354/56320 cut-off events. [2022-09-16 12:07:27,988 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-09-16 12:07:28,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102993 conditions, 56320 events. 13354/56320 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 730561 event pairs, 1312 based on Foata normal form. 44070/91985 useless extension candidates. Maximal degree in co-relation 49834. Up to 21536 conditions per place. [2022-09-16 12:07:28,487 INFO L137 encePairwiseOnDemand]: 153/178 looper letters, 89 selfloop transitions, 10 changer transitions 8/203 dead transitions. [2022-09-16 12:07:28,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 203 transitions, 816 flow [2022-09-16 12:07:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2022-09-16 12:07:28,489 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7179775280898877 [2022-09-16 12:07:28,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2022-09-16 12:07:28,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2022-09-16 12:07:28,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:28,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2022-09-16 12:07:28,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:28,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:28,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:28,493 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 506 flow. Second operand 5 states and 639 transitions. [2022-09-16 12:07:28,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 203 transitions, 816 flow [2022-09-16 12:07:28,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 203 transitions, 816 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:28,507 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 528 flow [2022-09-16 12:07:28,508 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=528, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-09-16 12:07:28,508 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-09-16 12:07:28,508 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 528 flow [2022-09-16 12:07:28,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:28,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:28,509 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] [2022-09-16 12:07:28,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 12:07:28,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1531881807, now seen corresponding path program 1 times [2022-09-16 12:07:28,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:28,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49233462] [2022-09-16 12:07:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:28,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:07:28,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:28,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49233462] [2022-09-16 12:07:28,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49233462] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:28,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:28,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:28,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173531921] [2022-09-16 12:07:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:28,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:28,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:28,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:28,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:28,536 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-09-16 12:07:28,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:28,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:28,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-09-16 12:07:28,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:35,087 INFO L130 PetriNetUnfolder]: 13354/48212 cut-off events. [2022-09-16 12:07:35,087 INFO L131 PetriNetUnfolder]: For 19782/19782 co-relation queries the response was YES. [2022-09-16 12:07:35,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100306 conditions, 48212 events. 13354/48212 cut-off events. For 19782/19782 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 583053 event pairs, 3293 based on Foata normal form. 4/41885 useless extension candidates. Maximal degree in co-relation 52037. Up to 25869 conditions per place. [2022-09-16 12:07:35,771 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 49 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2022-09-16 12:07:35,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 165 transitions, 670 flow [2022-09-16 12:07:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2022-09-16 12:07:35,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.650561797752809 [2022-09-16 12:07:35,773 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2022-09-16 12:07:35,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2022-09-16 12:07:35,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:35,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2022-09-16 12:07:35,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:35,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:35,776 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:35,776 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 528 flow. Second operand 5 states and 579 transitions. [2022-09-16 12:07:35,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 165 transitions, 670 flow [2022-09-16 12:07:35,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:07:35,807 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 588 flow [2022-09-16 12:07:35,807 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=588, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2022-09-16 12:07:35,808 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-09-16 12:07:35,808 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 588 flow [2022-09-16 12:07:35,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:35,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:35,808 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] [2022-09-16 12:07:35,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 12:07:35,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash 243696616, now seen corresponding path program 1 times [2022-09-16 12:07:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740255016] [2022-09-16 12:07:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:35,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740255016] [2022-09-16 12:07:35,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740255016] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965673700] [2022-09-16 12:07:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:35,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:35,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:35,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:07:35,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 12:07:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:35,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:07:35,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:35,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:07:35,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965673700] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:35,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:07:35,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:07:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069771276] [2022-09-16 12:07:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:07:35,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:07:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:07:35,986 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-09-16 12:07:35,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:35,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:35,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-09-16 12:07:35,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:42,899 INFO L130 PetriNetUnfolder]: 13354/48208 cut-off events. [2022-09-16 12:07:42,899 INFO L131 PetriNetUnfolder]: For 37629/37629 co-relation queries the response was YES. [2022-09-16 12:07:43,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109603 conditions, 48208 events. 13354/48208 cut-off events. For 37629/37629 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 582815 event pairs, 1312 based on Foata normal form. 4/41881 useless extension candidates. Maximal degree in co-relation 56667. Up to 19427 conditions per place. [2022-09-16 12:07:43,528 INFO L137 encePairwiseOnDemand]: 165/178 looper letters, 83 selfloop transitions, 14 changer transitions 0/193 dead transitions. [2022-09-16 12:07:43,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 193 transitions, 896 flow [2022-09-16 12:07:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:07:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:07:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 819 transitions. [2022-09-16 12:07:43,530 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6573033707865169 [2022-09-16 12:07:43,530 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 819 transitions. [2022-09-16 12:07:43,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 819 transitions. [2022-09-16 12:07:43,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:43,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 819 transitions. [2022-09-16 12:07:43,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:43,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:43,534 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:43,535 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 588 flow. Second operand 7 states and 819 transitions. [2022-09-16 12:07:43,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 193 transitions, 896 flow [2022-09-16 12:07:43,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 193 transitions, 872 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:07:43,574 INFO L231 Difference]: Finished difference. Result has 169 places, 164 transitions, 588 flow [2022-09-16 12:07:43,574 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=169, PETRI_TRANSITIONS=164} [2022-09-16 12:07:43,574 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -1 predicate places. [2022-09-16 12:07:43,574 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 164 transitions, 588 flow [2022-09-16 12:07:43,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:43,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:43,575 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] [2022-09-16 12:07:43,591 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 12:07:43,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:43,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:43,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1154718095, now seen corresponding path program 1 times [2022-09-16 12:07:43,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:43,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16747164] [2022-09-16 12:07:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:43,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16747164] [2022-09-16 12:07:43,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16747164] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296700412] [2022-09-16 12:07:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:43,822 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:07:43,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 12:07:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:43,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:43,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:43,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:43,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296700412] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:43,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:43,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:43,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341908333] [2022-09-16 12:07:43,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:43,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:43,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:43,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:43,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:43,966 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-09-16 12:07:43,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 106.5) internal successors, (1065), 10 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:43,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:43,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-09-16 12:07:43,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:50,888 INFO L130 PetriNetUnfolder]: 13309/47660 cut-off events. [2022-09-16 12:07:50,888 INFO L131 PetriNetUnfolder]: For 33329/33329 co-relation queries the response was YES. [2022-09-16 12:07:51,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108666 conditions, 47660 events. 13309/47660 cut-off events. For 33329/33329 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 588608 event pairs, 1457 based on Foata normal form. 2/41435 useless extension candidates. Maximal degree in co-relation 56704. Up to 10130 conditions per place. [2022-09-16 12:07:51,535 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 84 selfloop transitions, 21 changer transitions 0/201 dead transitions. [2022-09-16 12:07:51,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 201 transitions, 948 flow [2022-09-16 12:07:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 12:07:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 12:07:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1137 transitions. [2022-09-16 12:07:51,537 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6387640449438202 [2022-09-16 12:07:51,537 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1137 transitions. [2022-09-16 12:07:51,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1137 transitions. [2022-09-16 12:07:51,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:51,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1137 transitions. [2022-09-16 12:07:51,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.7) internal successors, (1137), 10 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:51,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:51,542 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:51,542 INFO L175 Difference]: Start difference. First operand has 169 places, 164 transitions, 588 flow. Second operand 10 states and 1137 transitions. [2022-09-16 12:07:51,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 201 transitions, 948 flow [2022-09-16 12:07:51,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 201 transitions, 930 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:51,575 INFO L231 Difference]: Finished difference. Result has 178 places, 168 transitions, 668 flow [2022-09-16 12:07:51,575 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=668, PETRI_PLACES=178, PETRI_TRANSITIONS=168} [2022-09-16 12:07:51,575 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 8 predicate places. [2022-09-16 12:07:51,576 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 168 transitions, 668 flow [2022-09-16 12:07:51,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.5) internal successors, (1065), 10 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:51,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:51,576 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:07:51,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-09-16 12:07:51,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-09-16 12:07:51,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:07:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 192390268, now seen corresponding path program 1 times [2022-09-16 12:07:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:51,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422828823] [2022-09-16 12:07:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:07:51,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:51,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422828823] [2022-09-16 12:07:51,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422828823] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:51,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:51,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995122992] [2022-09-16 12:07:51,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:51,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:51,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:51,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:51,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:51,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 178 [2022-09-16 12:07:51,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 168 transitions, 668 flow. Second operand has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:51,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:51,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 178 [2022-09-16 12:07:51,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:59,134 INFO L130 PetriNetUnfolder]: 13309/47654 cut-off events. [2022-09-16 12:07:59,134 INFO L131 PetriNetUnfolder]: For 59897/59897 co-relation queries the response was YES. [2022-09-16 12:07:59,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118007 conditions, 47654 events. 13309/47654 cut-off events. For 59897/59897 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 588671 event pairs, 1457 based on Foata normal form. 0/41433 useless extension candidates. Maximal degree in co-relation 61378. Up to 20468 conditions per place. [2022-09-16 12:07:59,845 INFO L137 encePairwiseOnDemand]: 166/178 looper letters, 92 selfloop transitions, 10 changer transitions 0/198 dead transitions. [2022-09-16 12:07:59,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 198 transitions, 992 flow [2022-09-16 12:07:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 616 transitions. [2022-09-16 12:07:59,846 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6921348314606741 [2022-09-16 12:07:59,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 616 transitions. [2022-09-16 12:07:59,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 616 transitions. [2022-09-16 12:07:59,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:59,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 616 transitions. [2022-09-16 12:07:59,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:59,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:59,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:59,849 INFO L175 Difference]: Start difference. First operand has 178 places, 168 transitions, 668 flow. Second operand 5 states and 616 transitions. [2022-09-16 12:07:59,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 198 transitions, 992 flow [2022-09-16 12:08:00,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 198 transitions, 968 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-09-16 12:08:00,059 INFO L231 Difference]: Finished difference. Result has 181 places, 170 transitions, 688 flow [2022-09-16 12:08:00,059 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=181, PETRI_TRANSITIONS=170} [2022-09-16 12:08:00,059 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 11 predicate places. [2022-09-16 12:08:00,059 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 170 transitions, 688 flow [2022-09-16 12:08:00,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:08:00,060 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:08:00,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 12:08:00,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:08:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:08:00,060 INFO L85 PathProgramCache]: Analyzing trace with hash 232757749, now seen corresponding path program 1 times [2022-09-16 12:08:00,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:08:00,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989315876] [2022-09-16 12:08:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:08:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:08:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:08:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 12:08:00,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:08:00,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989315876] [2022-09-16 12:08:00,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989315876] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:08:00,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659090949] [2022-09-16 12:08:00,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:08:00,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:08:00,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:08:00,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:08:00,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 12:08:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:08:00,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 12:08:00,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:08:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-16 12:08:00,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:08:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-16 12:08:00,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659090949] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:08:00,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:08:00,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-16 12:08:00,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413302443] [2022-09-16 12:08:00,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:08:00,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 12:08:00,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:08:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 12:08:00,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-09-16 12:08:00,417 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-09-16 12:08:00,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 170 transitions, 688 flow. Second operand has 19 states, 19 states have (on average 102.57894736842105) internal successors, (1949), 19 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:08:00,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-09-16 12:08:00,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:08:00,573 INFO L130 PetriNetUnfolder]: 0/112 cut-off events. [2022-09-16 12:08:00,573 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-09-16 12:08:00,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 112 events. 0/112 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 49 event pairs, 0 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-09-16 12:08:00,574 INFO L137 encePairwiseOnDemand]: 173/178 looper letters, 29 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2022-09-16 12:08:00,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 94 transitions, 439 flow [2022-09-16 12:08:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:08:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:08:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1812 transitions. [2022-09-16 12:08:00,577 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5655430711610487 [2022-09-16 12:08:00,577 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1812 transitions. [2022-09-16 12:08:00,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1812 transitions. [2022-09-16 12:08:00,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:08:00,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1812 transitions. [2022-09-16 12:08:00,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 100.66666666666667) internal successors, (1812), 18 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,584 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,584 INFO L175 Difference]: Start difference. First operand has 181 places, 170 transitions, 688 flow. Second operand 18 states and 1812 transitions. [2022-09-16 12:08:00,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 94 transitions, 439 flow [2022-09-16 12:08:00,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 94 transitions, 397 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-09-16 12:08:00,587 INFO L231 Difference]: Finished difference. Result has 114 places, 78 transitions, 293 flow [2022-09-16 12:08:00,587 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=293, PETRI_PLACES=114, PETRI_TRANSITIONS=78} [2022-09-16 12:08:00,587 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -56 predicate places. [2022-09-16 12:08:00,587 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 78 transitions, 293 flow [2022-09-16 12:08:00,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 102.57894736842105) internal successors, (1949), 19 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:08:00,588 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:08:00,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 12:08:00,803 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,SelfDestructingSolverStorable23 [2022-09-16 12:08:00,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-09-16 12:08:00,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:08:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1965535426, now seen corresponding path program 1 times [2022-09-16 12:08:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:08:00,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745511336] [2022-09-16 12:08:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:08:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:08:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:08:00,825 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:08:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:08:00,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:08:00,868 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:08:00,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:08:00,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:08:00,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:08:00,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:08:00,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:08:00,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:08:00,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:08:00,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:08:00,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:08:00,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:08:00,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 12:08:00,869 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:08:00,870 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:08:00,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-09-16 12:08:00,899 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2022-09-16 12:08:00,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 196 transitions, 584 flow