/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_good-20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:06:59,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:06:59,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:06:59,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:06:59,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:06:59,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:06:59,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:06:59,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:06:59,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:06:59,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:06:59,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:06:59,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:06:59,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:06:59,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:06:59,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:06:59,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:06:59,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:06:59,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:06:59,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:06:59,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:06:59,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:06:59,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:06:59,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:06:59,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:06:59,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:06:59,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:06:59,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:06:59,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:06:59,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:06:59,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:06:59,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:06:59,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:06:59,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:06:59,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:06:59,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:06:59,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:06:59,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:06:59,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:06:59,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:06:59,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:06:59,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:06:59,615 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 12:06:59,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:06:59,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:06:59,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:06:59,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:06:59,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:06:59,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:06:59,639 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:06:59,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:06:59,639 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:06:59,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:06:59,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:06:59,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:06:59,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:06:59,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:06:59,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:06:59,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:06:59,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:06:59,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:06:59,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:06:59,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:06:59,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:06:59,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:06:59,643 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:06:59,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:06:59,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:06:59,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:06:59,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:06:59,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:06:59,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:06:59,863 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:06:59,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/reorder_c11_good-20.i [2022-09-16 12:06:59,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726978e53/e3940693750346f2b5a9eeb54733d8b9/FLAG314b2db9f [2022-09-16 12:07:00,294 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:07:00,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_good-20.i [2022-09-16 12:07:00,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726978e53/e3940693750346f2b5a9eeb54733d8b9/FLAG314b2db9f [2022-09-16 12:07:00,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726978e53/e3940693750346f2b5a9eeb54733d8b9 [2022-09-16 12:07:00,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:07:00,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:07:00,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:07:00,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:07:00,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:07:00,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:07:00" (1/1) ... [2022-09-16 12:07:00,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448b032e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:00, skipping insertion in model container [2022-09-16 12:07:00,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:07:00" (1/1) ... [2022-09-16 12:07:00,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:07:00,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:07:00,954 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_good-20.i[30195,30208] [2022-09-16 12:07:00,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:07:00,974 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:07:01,005 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_good-20.i[30195,30208] [2022-09-16 12:07:01,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:07:01,036 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:07:01,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01 WrapperNode [2022-09-16 12:07:01,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:07:01,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:07:01,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:07:01,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:07:01,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,084 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-09-16 12:07:01,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:07:01,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:07:01,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:07:01,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:07:01,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:07:01,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:07:01,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:07:01,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:07:01,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (1/1) ... [2022-09-16 12:07:01,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:07:01,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:01,177 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 12:07:01,197 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 12:07:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-09-16 12:07:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-09-16 12:07:01,227 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 12:07:01,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:07:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:07:01,229 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 12:07:01,355 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:07:01,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:07:01,534 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:07:01,539 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:07:01,539 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 12:07:01,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:07:01 BoogieIcfgContainer [2022-09-16 12:07:01,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:07:01,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:07:01,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:07:01,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:07:01,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:07:00" (1/3) ... [2022-09-16 12:07:01,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c455ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:07:01, skipping insertion in model container [2022-09-16 12:07:01,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:07:01" (2/3) ... [2022-09-16 12:07:01,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c455ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:07:01, skipping insertion in model container [2022-09-16 12:07:01,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:07:01" (3/3) ... [2022-09-16 12:07:01,566 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-20.i [2022-09-16 12:07:01,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:07:01,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 12:07:01,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:07:01,643 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 12:07:01,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-09-16 12:07:01,744 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-09-16 12:07:01,744 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-16 12:07:01,748 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 754 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 12:07:01,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 106 transitions, 234 flow [2022-09-16 12:07:01,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 106 transitions, 234 flow [2022-09-16 12:07:01,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:01,765 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;@15129c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:01,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:01,771 INFO L130 PetriNetUnfolder]: 4/57 cut-off events. [2022-09-16 12:07:01,771 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:01,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:01,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:07:01,772 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 12:07:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1335782458, now seen corresponding path program 1 times [2022-09-16 12:07:01,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:01,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485845968] [2022-09-16 12:07:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:01,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:02,024 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 12:07:02,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:02,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485845968] [2022-09-16 12:07:02,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485845968] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:02,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:02,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:02,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577567923] [2022-09-16 12:07:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:02,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:02,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:02,062 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 106 [2022-09-16 12:07:02,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:02,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 106 [2022-09-16 12:07:02,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:02,192 INFO L130 PetriNetUnfolder]: 2/139 cut-off events. [2022-09-16 12:07:02,193 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 12:07:02,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 139 events. 2/139 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 153 event pairs, 0 based on Foata normal form. 18/141 useless extension candidates. Maximal degree in co-relation 32. Up to 30 conditions per place. [2022-09-16 12:07:02,220 INFO L137 encePairwiseOnDemand]: 85/106 looper letters, 33 selfloop transitions, 9 changer transitions 14/109 dead transitions. [2022-09-16 12:07:02,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 340 flow [2022-09-16 12:07:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2022-09-16 12:07:02,255 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7037735849056603 [2022-09-16 12:07:02,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2022-09-16 12:07:02,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2022-09-16 12:07:02,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:02,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2022-09-16 12:07:02,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,274 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 12:07:02,275 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 12:07:02,276 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 234 flow. Second operand 5 states and 373 transitions. [2022-09-16 12:07:02,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 340 flow [2022-09-16 12:07:02,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:02,291 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 225 flow [2022-09-16 12:07:02,292 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2022-09-16 12:07:02,298 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2022-09-16 12:07:02,298 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 225 flow [2022-09-16 12:07:02,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:02,299 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 12:07:02,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:07:02,304 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 12:07:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1407798388, now seen corresponding path program 1 times [2022-09-16 12:07:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:02,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068570366] [2022-09-16 12:07:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:02,383 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:07:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:02,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:07:02,464 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:07:02,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:07:02,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:07:02,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:07:02,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:07:02,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:07:02,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:07:02,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:07:02,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:07:02,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:07:02,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:07:02,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 12:07:02,469 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-16 12:07:02,471 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:07:02,471 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-09-16 12:07:02,489 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-09-16 12:07:02,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-09-16 12:07:02,588 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-09-16 12:07:02,588 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-09-16 12:07:02,594 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 4100 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 12:07:02,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 124 transitions, 296 flow [2022-09-16 12:07:02,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 124 transitions, 296 flow [2022-09-16 12:07:02,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:02,603 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;@15129c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:02,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:02,610 INFO L130 PetriNetUnfolder]: 4/61 cut-off events. [2022-09-16 12:07:02,610 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:02,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:02,610 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 12:07:02,612 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 12:07:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1768181364, now seen corresponding path program 1 times [2022-09-16 12:07:02,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:02,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619492695] [2022-09-16 12:07:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:02,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:02,675 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 12:07:02,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:02,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619492695] [2022-09-16 12:07:02,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619492695] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:02,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:02,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:02,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514166385] [2022-09-16 12:07:02,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:02,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:02,678 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-09-16 12:07:02,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:02,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-09-16 12:07:02,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:02,879 INFO L130 PetriNetUnfolder]: 58/741 cut-off events. [2022-09-16 12:07:02,879 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-09-16 12:07:02,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 741 events. 58/741 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4039 event pairs, 0 based on Foata normal form. 244/867 useless extension candidates. Maximal degree in co-relation 591. Up to 212 conditions per place. [2022-09-16 12:07:02,883 INFO L137 encePairwiseOnDemand]: 102/124 looper letters, 59 selfloop transitions, 10 changer transitions 8/141 dead transitions. [2022-09-16 12:07:02,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 141 transitions, 494 flow [2022-09-16 12:07:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2022-09-16 12:07:02,887 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.714516129032258 [2022-09-16 12:07:02,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2022-09-16 12:07:02,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2022-09-16 12:07:02,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:02,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2022-09-16 12:07:02,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,890 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 12:07:02,891 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 12:07:02,891 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 296 flow. Second operand 5 states and 443 transitions. [2022-09-16 12:07:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 141 transitions, 494 flow [2022-09-16 12:07:02,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 141 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:02,897 INFO L231 Difference]: Finished difference. Result has 122 places, 112 transitions, 326 flow [2022-09-16 12:07:02,897 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=122, PETRI_TRANSITIONS=112} [2022-09-16 12:07:02,898 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, 3 predicate places. [2022-09-16 12:07:02,898 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 112 transitions, 326 flow [2022-09-16 12:07:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:02,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:02,898 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 12:07:02,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 12:07:02,900 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 12:07:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1604792045, now seen corresponding path program 1 times [2022-09-16 12:07:02,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:02,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082342415] [2022-09-16 12:07:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:02,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:02,985 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 12:07:02,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:02,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082342415] [2022-09-16 12:07:02,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082342415] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:02,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:02,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:02,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839748204] [2022-09-16 12:07:02,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:02,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:02,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:02,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:02,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:02,989 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-09-16 12:07:02,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 112 transitions, 326 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 12:07:02,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:02,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-09-16 12:07:02,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:03,112 INFO L130 PetriNetUnfolder]: 58/652 cut-off events. [2022-09-16 12:07:03,112 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-09-16 12:07:03,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 652 events. 58/652 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3324 event pairs, 16 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 693. Up to 264 conditions per place. [2022-09-16 12:07:03,116 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 31 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2022-09-16 12:07:03,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 432 flow [2022-09-16 12:07:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2022-09-16 12:07:03,117 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.646774193548387 [2022-09-16 12:07:03,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2022-09-16 12:07:03,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2022-09-16 12:07:03,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:03,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2022-09-16 12:07:03,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,120 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 12:07:03,120 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 12:07:03,120 INFO L175 Difference]: Start difference. First operand has 122 places, 112 transitions, 326 flow. Second operand 5 states and 401 transitions. [2022-09-16 12:07:03,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 432 flow [2022-09-16 12:07:03,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:07:03,126 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 386 flow [2022-09-16 12:07:03,126 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2022-09-16 12:07:03,128 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, -2 predicate places. [2022-09-16 12:07:03,128 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 386 flow [2022-09-16 12:07:03,128 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 12:07:03,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:03,128 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 12:07:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 12:07:03,129 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 12:07:03,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1791053776, now seen corresponding path program 1 times [2022-09-16 12:07:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:03,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567914265] [2022-09-16 12:07:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:03,212 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 12:07:03,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:03,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567914265] [2022-09-16 12:07:03,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567914265] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675486046] [2022-09-16 12:07:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:03,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:03,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:03,221 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 12:07:03,246 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 12:07:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:03,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:07:03,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:03,390 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 12:07:03,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:07:03,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675486046] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:03,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:07:03,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:07:03,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67622649] [2022-09-16 12:07:03,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:07:03,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:07:03,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:07:03,395 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-09-16 12:07:03,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:03,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-09-16 12:07:03,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:03,554 INFO L130 PetriNetUnfolder]: 58/651 cut-off events. [2022-09-16 12:07:03,554 INFO L131 PetriNetUnfolder]: For 408/408 co-relation queries the response was YES. [2022-09-16 12:07:03,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 651 events. 58/651 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3322 event pairs, 0 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 775. Up to 167 conditions per place. [2022-09-16 12:07:03,558 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 53 selfloop transitions, 14 changer transitions 0/131 dead transitions. [2022-09-16 12:07:03,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 574 flow [2022-09-16 12:07:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:07:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:07:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2022-09-16 12:07:03,560 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6509216589861752 [2022-09-16 12:07:03,560 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2022-09-16 12:07:03,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2022-09-16 12:07:03,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:03,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2022-09-16 12:07:03,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,562 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 12:07:03,563 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 12:07:03,563 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 386 flow. Second operand 7 states and 565 transitions. [2022-09-16 12:07:03,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 574 flow [2022-09-16 12:07:03,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 131 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:07:03,569 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 386 flow [2022-09-16 12:07:03,569 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2022-09-16 12:07:03,571 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-09-16 12:07:03,571 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 386 flow [2022-09-16 12:07:03,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:03,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:03,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:07:03,591 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 12:07:03,788 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 12:07:03,789 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 12:07:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1170000787, now seen corresponding path program 1 times [2022-09-16 12:07:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:03,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681062906] [2022-09-16 12:07:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:03,861 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 12:07:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:03,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681062906] [2022-09-16 12:07:03,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681062906] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:03,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985909907] [2022-09-16 12:07:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:03,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:03,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:03,863 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 12:07:03,891 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 12:07:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:03,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:03,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:03,984 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 12:07:03,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:04,018 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 12:07:04,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985909907] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:04,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:04,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:04,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002795647] [2022-09-16 12:07:04,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:04,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:04,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:04,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:04,021 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-09-16 12:07:04,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:04,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:04,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-09-16 12:07:04,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:04,075 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-09-16 12:07:04,075 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-09-16 12:07:04,075 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 12:07:04,076 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 14 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2022-09-16 12:07:04,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 55 transitions, 206 flow [2022-09-16 12:07:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 12:07:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 12:07:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2022-09-16 12:07:04,078 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5931899641577061 [2022-09-16 12:07:04,078 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2022-09-16 12:07:04,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2022-09-16 12:07:04,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:04,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2022-09-16 12:07:04,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:04,080 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 12:07:04,081 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 12:07:04,081 INFO L175 Difference]: Start difference. First operand has 119 places, 114 transitions, 386 flow. Second operand 9 states and 662 transitions. [2022-09-16 12:07:04,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 55 transitions, 206 flow [2022-09-16 12:07:04,082 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 12:07:04,082 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 149 flow [2022-09-16 12:07:04,083 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 12:07:04,083 INFO L287 CegarLoopForPetriNet]: 119 programPoint places, -50 predicate places. [2022-09-16 12:07:04,083 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 149 flow [2022-09-16 12:07:04,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:04,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:04,084 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 12:07:04,115 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 12:07:04,301 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 12:07:04,301 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 12:07:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2114441817, now seen corresponding path program 1 times [2022-09-16 12:07:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:04,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986094103] [2022-09-16 12:07:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:04,327 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:07:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:04,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:07:04,341 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:07:04,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:07:04,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:07:04,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:07:04,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:07:04,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:07:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:07:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:07:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:07:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:07:04,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:07:04,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 12:07:04,344 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 12:07:04,344 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:07:04,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-09-16 12:07:04,372 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-09-16 12:07:04,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-09-16 12:07:04,587 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-09-16 12:07:04,587 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-09-16 12:07:04,598 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 20061 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 12:07:04,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 362 flow [2022-09-16 12:07:04,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 362 flow [2022-09-16 12:07:04,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:04,610 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;@15129c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:04,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:04,614 INFO L130 PetriNetUnfolder]: 4/61 cut-off events. [2022-09-16 12:07:04,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:04,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:04,614 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 12:07:04,614 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 12:07:04,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1747318180, now seen corresponding path program 1 times [2022-09-16 12:07:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:04,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192841710] [2022-09-16 12:07:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:04,649 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 12:07:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192841710] [2022-09-16 12:07:04,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192841710] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:04,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:04,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247675790] [2022-09-16 12:07:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:04,651 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-09-16 12:07:04,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:04,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:04,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-09-16 12:07:04,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:05,080 INFO L130 PetriNetUnfolder]: 444/3249 cut-off events. [2022-09-16 12:07:05,080 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-09-16 12:07:05,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 3249 events. 444/3249 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 27783 event pairs, 10 based on Foata normal form. 1641/4360 useless extension candidates. Maximal degree in co-relation 2717. Up to 1064 conditions per place. [2022-09-16 12:07:05,098 INFO L137 encePairwiseOnDemand]: 119/142 looper letters, 69 selfloop transitions, 10 changer transitions 8/160 dead transitions. [2022-09-16 12:07:05,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 160 transitions, 594 flow [2022-09-16 12:07:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2022-09-16 12:07:05,100 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.704225352112676 [2022-09-16 12:07:05,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2022-09-16 12:07:05,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2022-09-16 12:07:05,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:05,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2022-09-16 12:07:05,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:05,103 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 12:07:05,104 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 12:07:05,104 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 362 flow. Second operand 5 states and 500 transitions. [2022-09-16 12:07:05,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 160 transitions, 594 flow [2022-09-16 12:07:05,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:05,107 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 386 flow [2022-09-16 12:07:05,107 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2022-09-16 12:07:05,108 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2022-09-16 12:07:05,108 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 386 flow [2022-09-16 12:07:05,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:05,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:05,109 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 12:07:05,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 12:07:05,109 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 12:07:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1620439569, now seen corresponding path program 1 times [2022-09-16 12:07:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:05,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797560252] [2022-09-16 12:07:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:05,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:05,152 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 12:07:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797560252] [2022-09-16 12:07:05,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797560252] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:05,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:05,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479669712] [2022-09-16 12:07:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:05,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:05,154 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-09-16 12:07:05,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:05,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:05,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-09-16 12:07:05,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:05,464 INFO L130 PetriNetUnfolder]: 444/2791 cut-off events. [2022-09-16 12:07:05,464 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-09-16 12:07:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5425 conditions, 2791 events. 444/2791 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22400 event pairs, 109 based on Foata normal form. 2/2399 useless extension candidates. Maximal degree in co-relation 2859. Up to 1267 conditions per place. [2022-09-16 12:07:05,483 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 37 selfloop transitions, 20 changer transitions 0/130 dead transitions. [2022-09-16 12:07:05,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 130 transitions, 504 flow [2022-09-16 12:07:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:05,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2022-09-16 12:07:05,485 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6366197183098592 [2022-09-16 12:07:05,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2022-09-16 12:07:05,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2022-09-16 12:07:05,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:05,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2022-09-16 12:07:05,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:05,488 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 12:07:05,488 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 12:07:05,488 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 386 flow. Second operand 5 states and 452 transitions. [2022-09-16 12:07:05,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 130 transitions, 504 flow [2022-09-16 12:07:05,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:07:05,491 INFO L231 Difference]: Finished difference. Result has 132 places, 130 transitions, 446 flow [2022-09-16 12:07:05,492 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2022-09-16 12:07:05,493 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, -4 predicate places. [2022-09-16 12:07:05,493 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 446 flow [2022-09-16 12:07:05,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:05,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:05,493 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 12:07:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 12:07:05,494 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 12:07:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1305980392, now seen corresponding path program 1 times [2022-09-16 12:07:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:05,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493159094] [2022-09-16 12:07:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:05,547 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 12:07:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:05,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493159094] [2022-09-16 12:07:05,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493159094] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:05,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473804495] [2022-09-16 12:07:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:05,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:05,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:05,570 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 12:07:05,571 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 12:07:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:05,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:07:05,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:05,673 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 12:07:05,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:07:05,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473804495] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:05,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:07:05,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:07:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048826913] [2022-09-16 12:07:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:05,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:07:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:05,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:07:05,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:07:05,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-09-16 12:07:05,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:05,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:05,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-09-16 12:07:05,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:06,043 INFO L130 PetriNetUnfolder]: 444/2789 cut-off events. [2022-09-16 12:07:06,043 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2022-09-16 12:07:06,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 2789 events. 444/2789 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22400 event pairs, 10 based on Foata normal form. 2/2397 useless extension candidates. Maximal degree in co-relation 3161. Up to 909 conditions per place. [2022-09-16 12:07:06,067 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 63 selfloop transitions, 14 changer transitions 0/150 dead transitions. [2022-09-16 12:07:06,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 150 transitions, 674 flow [2022-09-16 12:07:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:07:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:07:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 638 transitions. [2022-09-16 12:07:06,069 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.641851106639839 [2022-09-16 12:07:06,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 638 transitions. [2022-09-16 12:07:06,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 638 transitions. [2022-09-16 12:07:06,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:06,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 638 transitions. [2022-09-16 12:07:06,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:06,072 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 12:07:06,073 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 12:07:06,073 INFO L175 Difference]: Start difference. First operand has 132 places, 130 transitions, 446 flow. Second operand 7 states and 638 transitions. [2022-09-16 12:07:06,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 150 transitions, 674 flow [2022-09-16 12:07:06,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 150 transitions, 650 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:07:06,077 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 446 flow [2022-09-16 12:07:06,077 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2022-09-16 12:07:06,079 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, -2 predicate places. [2022-09-16 12:07:06,079 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 446 flow [2022-09-16 12:07:06,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:06,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:06,080 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 12:07:06,114 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 12:07:06,295 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 12:07:06,296 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 12:07:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1065731438, now seen corresponding path program 1 times [2022-09-16 12:07:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021228299] [2022-09-16 12:07:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:06,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:06,326 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 12:07:06,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:06,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021228299] [2022-09-16 12:07:06,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021228299] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:06,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418473235] [2022-09-16 12:07:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:06,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:06,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:06,327 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 12:07:06,329 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 12:07:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:06,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:06,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:06,417 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 12:07:06,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:06,450 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 12:07:06,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418473235] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:06,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:06,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:06,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680362526] [2022-09-16 12:07:06,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:06,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:06,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:06,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:06,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:06,454 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-09-16 12:07:06,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 83.5) internal successors, (835), 10 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:06,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:06,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-09-16 12:07:06,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:06,802 INFO L130 PetriNetUnfolder]: 423/2503 cut-off events. [2022-09-16 12:07:06,803 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-09-16 12:07:06,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 2503 events. 423/2503 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19965 event pairs, 35 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 5364. Up to 482 conditions per place. [2022-09-16 12:07:06,821 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 64 selfloop transitions, 21 changer transitions 0/158 dead transitions. [2022-09-16 12:07:06,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 158 transitions, 726 flow [2022-09-16 12:07:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 12:07:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 12:07:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 887 transitions. [2022-09-16 12:07:06,824 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6246478873239436 [2022-09-16 12:07:06,824 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 887 transitions. [2022-09-16 12:07:06,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 887 transitions. [2022-09-16 12:07:06,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:06,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 887 transitions. [2022-09-16 12:07:06,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.7) internal successors, (887), 10 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:06,828 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 12:07:06,828 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 12:07:06,828 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 446 flow. Second operand 10 states and 887 transitions. [2022-09-16 12:07:06,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 158 transitions, 726 flow [2022-09-16 12:07:06,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 158 transitions, 708 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:06,835 INFO L231 Difference]: Finished difference. Result has 143 places, 133 transitions, 526 flow [2022-09-16 12:07:06,835 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=143, PETRI_TRANSITIONS=133} [2022-09-16 12:07:06,836 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2022-09-16 12:07:06,836 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 133 transitions, 526 flow [2022-09-16 12:07:06,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.5) internal successors, (835), 10 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:06,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:06,836 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 12:07:06,863 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 12:07:07,053 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 12:07:07,054 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 12:07:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1422189243, now seen corresponding path program 1 times [2022-09-16 12:07:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:07,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201900770] [2022-09-16 12:07:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:07,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:07,080 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:07:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:07,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:07:07,093 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:07:07,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:07:07,094 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:07:07,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 12:07:07,094 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 12:07:07,095 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:07:07,095 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-09-16 12:07:07,111 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-09-16 12:07:07,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-09-16 12:07:08,126 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-09-16 12:07:08,126 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-09-16 12:07:08,187 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 101085 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 12:07:08,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 160 transitions, 432 flow [2022-09-16 12:07:08,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 160 transitions, 432 flow [2022-09-16 12:07:08,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:08,220 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;@15129c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:08,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:08,223 INFO L130 PetriNetUnfolder]: 4/60 cut-off events. [2022-09-16 12:07:08,223 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:08,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:08,223 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 12:07:08,223 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 12:07:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 620781582, now seen corresponding path program 1 times [2022-09-16 12:07:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:08,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664970547] [2022-09-16 12:07:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:07:08,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:08,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664970547] [2022-09-16 12:07:08,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664970547] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:08,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:08,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:08,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117518143] [2022-09-16 12:07:08,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:08,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:08,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:08,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:08,261 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-09-16 12:07:08,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 160 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:08,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:08,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-09-16 12:07:08,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:09,758 INFO L130 PetriNetUnfolder]: 2570/13543 cut-off events. [2022-09-16 12:07:09,759 INFO L131 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2022-09-16 12:07:09,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23829 conditions, 13543 events. 2570/13543 cut-off events. For 3152/3152 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 147705 event pairs, 152 based on Foata normal form. 8872/20287 useless extension candidates. Maximal degree in co-relation 11646. Up to 4858 conditions per place. [2022-09-16 12:07:09,839 INFO L137 encePairwiseOnDemand]: 136/160 looper letters, 79 selfloop transitions, 10 changer transitions 8/179 dead transitions. [2022-09-16 12:07:09,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 179 transitions, 698 flow [2022-09-16 12:07:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2022-09-16 12:07:09,841 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.69625 [2022-09-16 12:07:09,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2022-09-16 12:07:09,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2022-09-16 12:07:09,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:09,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2022-09-16 12:07:09,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:09,843 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 12:07:09,843 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 12:07:09,843 INFO L175 Difference]: Start difference. First operand has 153 places, 160 transitions, 432 flow. Second operand 5 states and 557 transitions. [2022-09-16 12:07:09,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 179 transitions, 698 flow [2022-09-16 12:07:09,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 179 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:09,847 INFO L231 Difference]: Finished difference. Result has 152 places, 142 transitions, 450 flow [2022-09-16 12:07:09,848 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=152, PETRI_TRANSITIONS=142} [2022-09-16 12:07:09,848 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, -1 predicate places. [2022-09-16 12:07:09,848 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 142 transitions, 450 flow [2022-09-16 12:07:09,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:09,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:09,849 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 12:07:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 12:07:09,849 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 12:07:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1880264199, now seen corresponding path program 1 times [2022-09-16 12:07:09,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:09,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671419641] [2022-09-16 12:07:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:09,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:09,868 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 12:07:09,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:09,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671419641] [2022-09-16 12:07:09,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671419641] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:09,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:09,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:09,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546217965] [2022-09-16 12:07:09,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:09,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:09,870 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-09-16 12:07:09,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 142 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:09,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:09,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-09-16 12:07:09,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:11,301 INFO L130 PetriNetUnfolder]: 2570/11564 cut-off events. [2022-09-16 12:07:11,302 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2022-09-16 12:07:11,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23295 conditions, 11564 events. 2570/11564 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118438 event pairs, 618 based on Foata normal form. 3/9967 useless extension candidates. Maximal degree in co-relation 12088. Up to 5766 conditions per place. [2022-09-16 12:07:11,370 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 43 selfloop transitions, 20 changer transitions 0/145 dead transitions. [2022-09-16 12:07:11,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 580 flow [2022-09-16 12:07:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-09-16 12:07:11,372 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.62875 [2022-09-16 12:07:11,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-09-16 12:07:11,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-09-16 12:07:11,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:11,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-09-16 12:07:11,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:11,374 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 12:07:11,374 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 12:07:11,374 INFO L175 Difference]: Start difference. First operand has 152 places, 142 transitions, 450 flow. Second operand 5 states and 503 transitions. [2022-09-16 12:07:11,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 580 flow [2022-09-16 12:07:11,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:07:11,381 INFO L231 Difference]: Finished difference. Result has 147 places, 145 transitions, 510 flow [2022-09-16 12:07:11,381 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=147, PETRI_TRANSITIONS=145} [2022-09-16 12:07:11,381 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, -6 predicate places. [2022-09-16 12:07:11,381 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 145 transitions, 510 flow [2022-09-16 12:07:11,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:11,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:11,382 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 12:07:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 12:07:11,382 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 12:07:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1841351296, now seen corresponding path program 1 times [2022-09-16 12:07:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:11,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550797199] [2022-09-16 12:07:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:11,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:11,426 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 12:07:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:11,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550797199] [2022-09-16 12:07:11,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550797199] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:11,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590158736] [2022-09-16 12:07:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:11,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:11,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:11,444 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 12:07:11,445 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 12:07:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:11,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:07:11,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:11,547 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 12:07:11,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:07:11,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590158736] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:11,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:07:11,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:07:11,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028807325] [2022-09-16 12:07:11,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:11,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:07:11,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:07:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:07:11,549 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-09-16 12:07:11,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 145 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:11,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:11,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-09-16 12:07:11,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:12,905 INFO L130 PetriNetUnfolder]: 2570/11561 cut-off events. [2022-09-16 12:07:12,905 INFO L131 PetriNetUnfolder]: For 8768/8768 co-relation queries the response was YES. [2022-09-16 12:07:12,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25647 conditions, 11561 events. 2570/11561 cut-off events. For 8768/8768 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118403 event pairs, 152 based on Foata normal form. 3/9964 useless extension candidates. Maximal degree in co-relation 13258. Up to 4303 conditions per place. [2022-09-16 12:07:13,009 INFO L137 encePairwiseOnDemand]: 147/160 looper letters, 73 selfloop transitions, 14 changer transitions 0/169 dead transitions. [2022-09-16 12:07:13,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 169 transitions, 778 flow [2022-09-16 12:07:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:07:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:07:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 711 transitions. [2022-09-16 12:07:13,012 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6348214285714285 [2022-09-16 12:07:13,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 711 transitions. [2022-09-16 12:07:13,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 711 transitions. [2022-09-16 12:07:13,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:13,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 711 transitions. [2022-09-16 12:07:13,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.57142857142857) internal successors, (711), 7 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,015 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 12:07:13,015 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 12:07:13,015 INFO L175 Difference]: Start difference. First operand has 147 places, 145 transitions, 510 flow. Second operand 7 states and 711 transitions. [2022-09-16 12:07:13,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 169 transitions, 778 flow [2022-09-16 12:07:13,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 169 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:07:13,027 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 510 flow [2022-09-16 12:07:13,027 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2022-09-16 12:07:13,027 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, -4 predicate places. [2022-09-16 12:07:13,027 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 510 flow [2022-09-16 12:07:13,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:13,028 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 12:07:13,061 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 12:07:13,239 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 12:07:13,240 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 12:07:13,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1764503369, now seen corresponding path program 1 times [2022-09-16 12:07:13,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:13,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731404684] [2022-09-16 12:07:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:13,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:13,266 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 12:07:13,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:13,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731404684] [2022-09-16 12:07:13,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731404684] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:13,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267551899] [2022-09-16 12:07:13,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:13,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:13,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:13,284 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 12:07:13,313 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 12:07:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:13,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:13,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:13,394 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 12:07:13,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:13,419 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 12:07:13,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267551899] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:13,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:13,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:13,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768946749] [2022-09-16 12:07:13,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:13,422 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-09-16 12:07:13,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 144 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 92.5) internal successors, (925), 10 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:13,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:13,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-09-16 12:07:13,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:14,674 INFO L130 PetriNetUnfolder]: 2538/11157 cut-off events. [2022-09-16 12:07:14,675 INFO L131 PetriNetUnfolder]: For 7602/7602 co-relation queries the response was YES. [2022-09-16 12:07:14,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24922 conditions, 11157 events. 2538/11157 cut-off events. For 7602/7602 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117304 event pairs, 214 based on Foata normal form. 2/9627 useless extension candidates. Maximal degree in co-relation 13282. Up to 2161 conditions per place. [2022-09-16 12:07:14,807 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 74 selfloop transitions, 21 changer transitions 0/177 dead transitions. [2022-09-16 12:07:14,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 177 transitions, 830 flow [2022-09-16 12:07:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 12:07:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 12:07:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 987 transitions. [2022-09-16 12:07:14,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.616875 [2022-09-16 12:07:14,810 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 987 transitions. [2022-09-16 12:07:14,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 987 transitions. [2022-09-16 12:07:14,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:14,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 987 transitions. [2022-09-16 12:07:14,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.7) internal successors, (987), 10 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:14,814 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 12:07:14,815 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 12:07:14,815 INFO L175 Difference]: Start difference. First operand has 149 places, 144 transitions, 510 flow. Second operand 10 states and 987 transitions. [2022-09-16 12:07:14,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 177 transitions, 830 flow [2022-09-16 12:07:14,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 177 transitions, 812 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:14,827 INFO L231 Difference]: Finished difference. Result has 158 places, 148 transitions, 590 flow [2022-09-16 12:07:14,827 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=158, PETRI_TRANSITIONS=148} [2022-09-16 12:07:14,828 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, 5 predicate places. [2022-09-16 12:07:14,829 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 148 transitions, 590 flow [2022-09-16 12:07:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 92.5) internal successors, (925), 10 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:14,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:14,829 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 12:07:14,848 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 12:07:15,046 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 12:07:15,046 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 12:07:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:15,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1792905212, now seen corresponding path program 1 times [2022-09-16 12:07:15,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:15,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214378439] [2022-09-16 12:07:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:15,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:15,072 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 12:07:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:15,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214378439] [2022-09-16 12:07:15,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214378439] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:15,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:15,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361021738] [2022-09-16 12:07:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:15,074 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-09-16 12:07:15,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 148 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:15,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:15,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-09-16 12:07:15,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:16,500 INFO L130 PetriNetUnfolder]: 2538/11153 cut-off events. [2022-09-16 12:07:16,501 INFO L131 PetriNetUnfolder]: For 14122/14122 co-relation queries the response was YES. [2022-09-16 12:07:16,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27264 conditions, 11153 events. 2538/11153 cut-off events. For 14122/14122 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117275 event pairs, 214 based on Foata normal form. 0/9625 useless extension candidates. Maximal degree in co-relation 14480. Up to 4554 conditions per place. [2022-09-16 12:07:16,630 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 82 selfloop transitions, 10 changer transitions 0/174 dead transitions. [2022-09-16 12:07:16,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 174 transitions, 874 flow [2022-09-16 12:07:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:16,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2022-09-16 12:07:16,634 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.67 [2022-09-16 12:07:16,634 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2022-09-16 12:07:16,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2022-09-16 12:07:16,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:16,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2022-09-16 12:07:16,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:16,637 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 12:07:16,637 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 12:07:16,638 INFO L175 Difference]: Start difference. First operand has 158 places, 148 transitions, 590 flow. Second operand 5 states and 536 transitions. [2022-09-16 12:07:16,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 174 transitions, 874 flow [2022-09-16 12:07:16,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 174 transitions, 850 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:16,658 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 610 flow [2022-09-16 12:07:16,658 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2022-09-16 12:07:16,659 INFO L287 CegarLoopForPetriNet]: 153 programPoint places, 8 predicate places. [2022-09-16 12:07:16,659 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 610 flow [2022-09-16 12:07:16,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:16,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:16,659 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 12:07:16,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 12:07:16,659 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 12:07:16,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1648976718, now seen corresponding path program 1 times [2022-09-16 12:07:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:16,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625733776] [2022-09-16 12:07:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:16,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:16,680 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:07:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:07:16,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:07:16,709 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:07:16,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:07:16,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 12:07:16,711 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-09-16 12:07:16,711 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:07:16,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-09-16 12:07:16,740 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-09-16 12:07:16,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-09-16 12:07:21,569 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-09-16 12:07:21,569 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-09-16 12:07:22,035 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 512506 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 12:07:22,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 506 flow [2022-09-16 12:07:22,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 506 flow [2022-09-16 12:07:22,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:07:22,169 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;@15129c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:07:22,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:07:22,171 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-09-16 12:07:22,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:07:22,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:22,172 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 12:07:22,172 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 12:07:22,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash -852823862, now seen corresponding path program 1 times [2022-09-16 12:07:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:22,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933765698] [2022-09-16 12:07:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:22,189 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 12:07:22,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:22,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933765698] [2022-09-16 12:07:22,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933765698] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:22,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:22,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530666931] [2022-09-16 12:07:22,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:22,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:22,190 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-09-16 12:07:22,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:22,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:22,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-09-16 12:07:22,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:28,971 INFO L130 PetriNetUnfolder]: 13354/56295 cut-off events. [2022-09-16 12:07:28,971 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-09-16 12:07:29,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102968 conditions, 56295 events. 13354/56295 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 730030 event pairs, 1312 based on Foata normal form. 44070/91985 useless extension candidates. Maximal degree in co-relation 49809. Up to 21536 conditions per place. [2022-09-16 12:07:29,550 INFO L137 encePairwiseOnDemand]: 153/178 looper letters, 89 selfloop transitions, 10 changer transitions 8/198 dead transitions. [2022-09-16 12:07:29,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 198 transitions, 806 flow [2022-09-16 12:07:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2022-09-16 12:07:29,552 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6898876404494382 [2022-09-16 12:07:29,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2022-09-16 12:07:29,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2022-09-16 12:07:29,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:29,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2022-09-16 12:07:29,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:29,555 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 12:07:29,555 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 12:07:29,555 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 506 flow. Second operand 5 states and 614 transitions. [2022-09-16 12:07:29,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 198 transitions, 806 flow [2022-09-16 12:07:29,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 198 transitions, 806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 12:07:29,569 INFO L231 Difference]: Finished difference. Result has 167 places, 157 transitions, 518 flow [2022-09-16 12:07:29,569 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=167, PETRI_TRANSITIONS=157} [2022-09-16 12:07:29,570 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-09-16 12:07:29,570 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 157 transitions, 518 flow [2022-09-16 12:07:29,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:29,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:29,570 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 12:07:29,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 12:07:29,571 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 12:07:29,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1910701361, now seen corresponding path program 1 times [2022-09-16 12:07:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:29,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10011230] [2022-09-16 12:07:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:29,589 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 12:07:29,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:29,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10011230] [2022-09-16 12:07:29,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10011230] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:29,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:29,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:29,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903734592] [2022-09-16 12:07:29,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:29,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:29,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:29,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:29,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:29,591 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-09-16 12:07:29,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 157 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:29,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:29,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-09-16 12:07:29,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:35,959 INFO L130 PetriNetUnfolder]: 13354/48187 cut-off events. [2022-09-16 12:07:35,959 INFO L131 PetriNetUnfolder]: For 19782/19782 co-relation queries the response was YES. [2022-09-16 12:07:36,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100281 conditions, 48187 events. 13354/48187 cut-off events. For 19782/19782 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 582570 event pairs, 3293 based on Foata normal form. 4/41885 useless extension candidates. Maximal degree in co-relation 52032. Up to 25869 conditions per place. [2022-09-16 12:07:36,525 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 49 selfloop transitions, 20 changer transitions 0/160 dead transitions. [2022-09-16 12:07:36,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 160 transitions, 660 flow [2022-09-16 12:07:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:07:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:07:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2022-09-16 12:07:36,527 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6224719101123596 [2022-09-16 12:07:36,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2022-09-16 12:07:36,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2022-09-16 12:07:36,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:36,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2022-09-16 12:07:36,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:36,529 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 12:07:36,529 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 12:07:36,529 INFO L175 Difference]: Start difference. First operand has 167 places, 157 transitions, 518 flow. Second operand 5 states and 554 transitions. [2022-09-16 12:07:36,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 160 transitions, 660 flow [2022-09-16 12:07:36,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:07:36,554 INFO L231 Difference]: Finished difference. Result has 162 places, 160 transitions, 578 flow [2022-09-16 12:07:36,554 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=162, PETRI_TRANSITIONS=160} [2022-09-16 12:07:36,554 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -8 predicate places. [2022-09-16 12:07:36,554 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 160 transitions, 578 flow [2022-09-16 12:07:36,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:36,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:36,555 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 12:07:36,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 12:07:36,555 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 12:07:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash 897800808, now seen corresponding path program 1 times [2022-09-16 12:07:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:36,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855711890] [2022-09-16 12:07:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:36,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:36,581 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 12:07:36,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:36,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855711890] [2022-09-16 12:07:36,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855711890] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:36,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486747904] [2022-09-16 12:07:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:36,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:36,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:36,583 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 12:07:36,584 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 12:07:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:36,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:07:36,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:36,708 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 12:07:36,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:07:36,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486747904] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:36,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:07:36,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:07:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337548820] [2022-09-16 12:07:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:36,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:07:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:07:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:07:36,710 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-09-16 12:07:36,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 160 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:36,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:36,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-09-16 12:07:36,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:43,316 INFO L130 PetriNetUnfolder]: 13354/48183 cut-off events. [2022-09-16 12:07:43,316 INFO L131 PetriNetUnfolder]: For 37629/37629 co-relation queries the response was YES. [2022-09-16 12:07:43,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109578 conditions, 48183 events. 13354/48183 cut-off events. For 37629/37629 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 582594 event pairs, 1312 based on Foata normal form. 4/41881 useless extension candidates. Maximal degree in co-relation 56662. Up to 19427 conditions per place. [2022-09-16 12:07:44,031 INFO L137 encePairwiseOnDemand]: 165/178 looper letters, 83 selfloop transitions, 14 changer transitions 0/188 dead transitions. [2022-09-16 12:07:44,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 188 transitions, 886 flow [2022-09-16 12:07:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:07:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:07:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 784 transitions. [2022-09-16 12:07:44,040 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6292134831460674 [2022-09-16 12:07:44,040 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 784 transitions. [2022-09-16 12:07:44,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 784 transitions. [2022-09-16 12:07:44,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:44,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 784 transitions. [2022-09-16 12:07:44,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:44,052 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 12:07:44,052 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 12:07:44,052 INFO L175 Difference]: Start difference. First operand has 162 places, 160 transitions, 578 flow. Second operand 7 states and 784 transitions. [2022-09-16 12:07:44,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 188 transitions, 886 flow [2022-09-16 12:07:44,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 862 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:07:44,105 INFO L231 Difference]: Finished difference. Result has 164 places, 159 transitions, 578 flow [2022-09-16 12:07:44,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=164, PETRI_TRANSITIONS=159} [2022-09-16 12:07:44,106 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -6 predicate places. [2022-09-16 12:07:44,106 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 159 transitions, 578 flow [2022-09-16 12:07:44,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:44,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:44,106 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 12:07:44,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 12:07:44,322 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 12:07:44,323 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 12:07:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1269230958, now seen corresponding path program 1 times [2022-09-16 12:07:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:44,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73510741] [2022-09-16 12:07:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:44,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:44,357 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 12:07:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73510741] [2022-09-16 12:07:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73510741] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:07:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855083610] [2022-09-16 12:07:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:44,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:07:44,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:07:44,372 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 12:07:44,373 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 12:07:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:44,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 12:07:44,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:07:44,484 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 12:07:44,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:07:44,521 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 12:07:44,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855083610] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:07:44,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:07:44,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 12:07:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315490874] [2022-09-16 12:07:44,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:07:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 12:07:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 12:07:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:07:44,523 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-09-16 12:07:44,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 159 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 101.5) internal successors, (1015), 10 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:44,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:44,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-09-16 12:07:44,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:51,269 INFO L130 PetriNetUnfolder]: 13309/47645 cut-off events. [2022-09-16 12:07:51,269 INFO L131 PetriNetUnfolder]: For 33329/33329 co-relation queries the response was YES. [2022-09-16 12:07:51,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108651 conditions, 47645 events. 13309/47645 cut-off events. For 33329/33329 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 587724 event pairs, 1457 based on Foata normal form. 2/41435 useless extension candidates. Maximal degree in co-relation 56699. Up to 10130 conditions per place. [2022-09-16 12:07:51,918 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 84 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2022-09-16 12:07:51,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 196 transitions, 938 flow [2022-09-16 12:07:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 12:07:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 12:07:51,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1087 transitions. [2022-09-16 12:07:51,921 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6106741573033708 [2022-09-16 12:07:51,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1087 transitions. [2022-09-16 12:07:51,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1087 transitions. [2022-09-16 12:07:51,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:07:51,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1087 transitions. [2022-09-16 12:07:51,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.7) internal successors, (1087), 10 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:51,944 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 12:07:51,944 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 12:07:51,944 INFO L175 Difference]: Start difference. First operand has 164 places, 159 transitions, 578 flow. Second operand 10 states and 1087 transitions. [2022-09-16 12:07:51,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 196 transitions, 938 flow [2022-09-16 12:07:51,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 196 transitions, 920 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 12:07:51,978 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 658 flow [2022-09-16 12:07:51,979 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=658, PETRI_PLACES=173, PETRI_TRANSITIONS=163} [2022-09-16 12:07:51,979 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 3 predicate places. [2022-09-16 12:07:51,979 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 658 flow [2022-09-16 12:07:51,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.5) internal successors, (1015), 10 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:51,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:07:51,980 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 12:07:51,998 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 12:07:52,198 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 12:07:52,198 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 12:07:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:07:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1248591709, now seen corresponding path program 1 times [2022-09-16 12:07:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:07:52,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665822048] [2022-09-16 12:07:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:07:52,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:07:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:07:52,223 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 12:07:52,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:07:52,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665822048] [2022-09-16 12:07:52,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665822048] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:07:52,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:07:52,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:07:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542394881] [2022-09-16 12:07:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:07:52,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:07:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:07:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:07:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:07:52,227 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-09-16 12:07:52,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 163 transitions, 658 flow. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:07:52,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:07:52,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-09-16 12:07:52,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:07:59,262 INFO L130 PetriNetUnfolder]: 13309/47639 cut-off events. [2022-09-16 12:07:59,262 INFO L131 PetriNetUnfolder]: For 59897/59897 co-relation queries the response was YES. [2022-09-16 12:07:59,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117992 conditions, 47639 events. 13309/47639 cut-off events. For 59897/59897 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 587627 event pairs, 1457 based on Foata normal form. 0/41433 useless extension candidates. Maximal degree in co-relation 61373. Up to 20468 conditions per place. [2022-09-16 12:08:00,149 INFO L137 encePairwiseOnDemand]: 166/178 looper letters, 92 selfloop transitions, 10 changer transitions 0/193 dead transitions. [2022-09-16 12:08:00,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 193 transitions, 982 flow [2022-09-16 12:08:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:08:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:08:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 591 transitions. [2022-09-16 12:08:00,150 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6640449438202247 [2022-09-16 12:08:00,150 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 591 transitions. [2022-09-16 12:08:00,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 591 transitions. [2022-09-16 12:08:00,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:08:00,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 591 transitions. [2022-09-16 12:08:00,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,152 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 12:08:00,152 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 12:08:00,153 INFO L175 Difference]: Start difference. First operand has 173 places, 163 transitions, 658 flow. Second operand 5 states and 591 transitions. [2022-09-16 12:08:00,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 193 transitions, 982 flow [2022-09-16 12:08:00,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 193 transitions, 958 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-09-16 12:08:00,208 INFO L231 Difference]: Finished difference. Result has 176 places, 165 transitions, 678 flow [2022-09-16 12:08:00,209 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=678, PETRI_PLACES=176, PETRI_TRANSITIONS=165} [2022-09-16 12:08:00,209 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 6 predicate places. [2022-09-16 12:08:00,209 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 165 transitions, 678 flow [2022-09-16 12:08:00,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:08:00,210 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 12:08:00,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 12:08:00,210 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 12:08:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:08:00,210 INFO L85 PathProgramCache]: Analyzing trace with hash 808948693, now seen corresponding path program 1 times [2022-09-16 12:08:00,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:08:00,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833347530] [2022-09-16 12:08:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:08:00,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:08:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:08:00,236 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 12:08:00,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:08:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833347530] [2022-09-16 12:08:00,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833347530] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:08:00,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225474471] [2022-09-16 12:08:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:08:00,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:08:00,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:08:00,252 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 12:08:00,253 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 12:08:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:08:00,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 12:08:00,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:08:00,413 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 L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:08:00,506 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 12:08:00,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225474471] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:08:00,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:08:00,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-16 12:08:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025797189] [2022-09-16 12:08:00,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:08:00,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 12:08:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:08:00,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 12:08:00,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-09-16 12:08:00,508 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 178 [2022-09-16 12:08:00,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 165 transitions, 678 flow. Second operand has 19 states, 19 states have (on average 97.57894736842105) internal successors, (1854), 19 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:08:00,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 178 [2022-09-16 12:08:00,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:08:00,647 INFO L130 PetriNetUnfolder]: 0/112 cut-off events. [2022-09-16 12:08:00,648 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-09-16 12:08:00,648 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 50 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 12:08:00,648 INFO L137 encePairwiseOnDemand]: 173/178 looper letters, 29 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2022-09-16 12:08:00,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 94 transitions, 439 flow [2022-09-16 12:08:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:08:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:08:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1722 transitions. [2022-09-16 12:08:00,650 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5374531835205992 [2022-09-16 12:08:00,650 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1722 transitions. [2022-09-16 12:08:00,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1722 transitions. [2022-09-16 12:08:00,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:08:00,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1722 transitions. [2022-09-16 12:08:00,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 95.66666666666667) internal successors, (1722), 18 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,655 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 12:08:00,655 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 12:08:00,655 INFO L175 Difference]: Start difference. First operand has 176 places, 165 transitions, 678 flow. Second operand 18 states and 1722 transitions. [2022-09-16 12:08:00,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 94 transitions, 439 flow [2022-09-16 12:08:00,656 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 12:08:00,657 INFO L231 Difference]: Finished difference. Result has 114 places, 78 transitions, 293 flow [2022-09-16 12:08:00,657 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 12:08:00,658 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -56 predicate places. [2022-09-16 12:08:00,658 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 78 transitions, 293 flow [2022-09-16 12:08:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 97.57894736842105) internal successors, (1854), 19 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:08:00,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:08:00,658 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 12:08:00,692 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 12:08:00,871 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 12:08:00,871 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 12:08:00,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:08:00,872 INFO L85 PathProgramCache]: Analyzing trace with hash 172099522, now seen corresponding path program 1 times [2022-09-16 12:08:00,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:08:00,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131836263] [2022-09-16 12:08:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:08:00,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:08:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:08:00,883 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 12:08:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 12:08:00,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 12:08:00,895 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 12:08:00,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-09-16 12:08:00,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-09-16 12:08:00,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-09-16 12:08:00,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-09-16 12:08:00,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-09-16 12:08:00,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-09-16 12:08:00,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-09-16 12:08:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-09-16 12:08:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-09-16 12:08:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-09-16 12:08:00,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 12:08:00,896 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:08:00,896 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 12:08:00,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-09-16 12:08:00,915 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2022-09-16 12:08:00,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 196 transitions, 584 flow [2022-09-16 12:08:25,931 INFO L130 PetriNetUnfolder]: 53395/181434 cut-off events. [2022-09-16 12:08:25,931 INFO L131 PetriNetUnfolder]: For 49552/49552 co-relation queries the response was YES. [2022-09-16 12:08:28,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230863 conditions, 181434 events. 53395/181434 cut-off events. For 49552/49552 co-relation queries the response was YES. Maximal size of possible extension queue 1979. Compared 2523411 event pairs, 24930 based on Foata normal form. 0/148420 useless extension candidates. Maximal degree in co-relation 111845. Up to 24576 conditions per place. [2022-09-16 12:08:28,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 196 transitions, 584 flow [2022-09-16 12:08:29,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 196 transitions, 584 flow [2022-09-16 12:08:29,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:08:29,828 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;@15129c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:08:29,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-09-16 12:08:29,833 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-09-16 12:08:29,834 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:08:29,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:08:29,834 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 12:08:29,834 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 12:08:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:08:29,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1621469144, now seen corresponding path program 1 times [2022-09-16 12:08:29,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:08:29,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634659162] [2022-09-16 12:08:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:08:29,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:08:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat