./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8bcba962b15df67a0e136eef2e702f216cc120b7626a7b8dc8877f6ecaf3765 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:54:42,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:54:42,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:54:42,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:54:42,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:54:42,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:54:42,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:54:42,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:54:42,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:54:42,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:54:42,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:54:42,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:54:42,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:54:42,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:54:42,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:54:42,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:54:42,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:54:42,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:54:42,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:54:42,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:54:42,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:54:42,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:54:42,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:54:42,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:54:42,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:54:42,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:54:42,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:54:42,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:54:42,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:54:42,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:54:42,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:54:42,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:54:42,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:54:42,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:54:42,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:54:42,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:54:42,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:54:42,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:54:42,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:54:42,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:54:42,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:54:42,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:54:42,759 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:54:42,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:54:42,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:54:42,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:54:42,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:54:42,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:54:42,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:54:42,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:54:42,763 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:54:42,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:54:42,764 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:54:42,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:54:42,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:54:42,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:54:42,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:54:42,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:54:42,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:54:42,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:54:42,765 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:54:42,766 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:54:42,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:54:42,766 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:54:42,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:54:42,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:54:42,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:54:42,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:54:42,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:54:42,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:54:42,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:54:42,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:54:42,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:54:42,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:54:42,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:54:42,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:54:42,768 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:54:42,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:54:42,769 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:54:42,769 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8bcba962b15df67a0e136eef2e702f216cc120b7626a7b8dc8877f6ecaf3765 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:54:43,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:54:43,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:54:43,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:54:43,115 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:54:43,115 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:54:43,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-08-30 12:54:44,331 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:54:44,563 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:54:44,563 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i [2023-08-30 12:54:44,574 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68002115d/d3fb5e4da32e43d2abdb156682dcdac9/FLAG3dfbb8a25 [2023-08-30 12:54:44,588 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68002115d/d3fb5e4da32e43d2abdb156682dcdac9 [2023-08-30 12:54:44,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:54:44,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:54:44,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:54:44,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:54:44,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:54:44,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:44,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6446e219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44, skipping insertion in model container [2023-08-30 12:54:44,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:44,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:54:44,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:54:44,852 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30726,30739] [2023-08-30 12:54:44,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:54:44,870 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:54:44,943 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/37_stack_lock_p0_vs_concur.i[30726,30739] [2023-08-30 12:54:44,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:54:44,997 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:54:44,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44 WrapperNode [2023-08-30 12:54:44,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:54:45,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:54:45,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:54:45,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:54:45,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,066 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 93 [2023-08-30 12:54:45,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:54:45,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:54:45,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:54:45,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:54:45,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:54:45,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:54:45,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:54:45,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:54:45,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (1/1) ... [2023-08-30 12:54:45,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:54:45,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:54:45,157 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) [2023-08-30 12:54:45,177 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 [2023-08-30 12:54:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:54:45,195 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 12:54:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 12:54:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:54:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:54:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:54:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:54:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:54:45,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:54:45,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:54:45,198 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 12:54:45,376 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:54:45,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:54:45,561 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:54:45,655 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:54:45,656 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:54:45,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:54:45 BoogieIcfgContainer [2023-08-30 12:54:45,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:54:45,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:54:45,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:54:45,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:54:45,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:54:44" (1/3) ... [2023-08-30 12:54:45,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2a7ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:54:45, skipping insertion in model container [2023-08-30 12:54:45,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:54:44" (2/3) ... [2023-08-30 12:54:45,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2a7ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:54:45, skipping insertion in model container [2023-08-30 12:54:45,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:54:45" (3/3) ... [2023-08-30 12:54:45,667 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2023-08-30 12:54:45,675 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:54:45,683 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:54:45,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 12:54:45,684 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:54:45,749 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:54:45,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 177 flow [2023-08-30 12:54:45,818 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2023-08-30 12:54:45,819 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:54:45,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 7/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-30 12:54:45,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 177 flow [2023-08-30 12:54:45,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 86 transitions, 177 flow [2023-08-30 12:54:45,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:54:45,844 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 86 transitions, 177 flow [2023-08-30 12:54:45,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 86 transitions, 177 flow [2023-08-30 12:54:45,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 177 flow [2023-08-30 12:54:45,882 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2023-08-30 12:54:45,883 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:54:45,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 96 events. 7/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-30 12:54:45,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 1508 [2023-08-30 12:54:47,694 INFO L134 LiptonReduction]: Checked pairs total: 2224 [2023-08-30 12:54:47,694 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-30 12:54:47,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:54:47,721 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=true, 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;@56cc1de2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:54:47,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 12:54:47,726 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 12:54:47,727 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:54:47,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:47,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:54:47,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:54:47,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash 432607244, now seen corresponding path program 1 times [2023-08-30 12:54:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:47,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386273381] [2023-08-30 12:54:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:47,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386273381] [2023-08-30 12:54:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386273381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:47,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:47,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:54:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890353320] [2023-08-30 12:54:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:47,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 12:54:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:47,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 12:54:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 12:54:47,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 166 [2023-08-30 12:54:47,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:47,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:47,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 166 [2023-08-30 12:54:47,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:48,046 INFO L130 PetriNetUnfolder]: 35/89 cut-off events. [2023-08-30 12:54:48,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:54:48,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 89 events. 35/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 266 event pairs, 29 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 164. Up to 85 conditions per place. [2023-08-30 12:54:48,050 INFO L137 encePairwiseOnDemand]: 161/166 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-30 12:54:48,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 91 flow [2023-08-30 12:54:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 12:54:48,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 12:54:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 163 transitions. [2023-08-30 12:54:48,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49096385542168675 [2023-08-30 12:54:48,065 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 163 transitions. [2023-08-30 12:54:48,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 163 transitions. [2023-08-30 12:54:48,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:48,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 163 transitions. [2023-08-30 12:54:48,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:48,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:48,075 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:48,076 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 61 flow. Second operand 2 states and 163 transitions. [2023-08-30 12:54:48,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 91 flow [2023-08-30 12:54:48,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 91 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:54:48,080 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 51 flow [2023-08-30 12:54:48,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=51, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-08-30 12:54:48,085 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2023-08-30 12:54:48,085 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 51 flow [2023-08-30 12:54:48,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:48,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:48,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 12:54:48,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:54:48,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 12:54:48,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash 526005355, now seen corresponding path program 1 times [2023-08-30 12:54:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:48,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955730733] [2023-08-30 12:54:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:54:48,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:54:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:54:48,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:54:48,132 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:54:48,133 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 12:54:48,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 12:54:48,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 12:54:48,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 12:54:48,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 12:54:48,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 12:54:48,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 12:54:48,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 12:54:48,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 12:54:48,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 12:54:48,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 12:54:48,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 12:54:48,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 12:54:48,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 12:54:48,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 12:54:48,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 12:54:48,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 12:54:48,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 12:54:48,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 12:54:48,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 12:54:48,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 12:54:48,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:54:48,140 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 12:54:48,142 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:54:48,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 12:54:48,180 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:54:48,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 302 flow [2023-08-30 12:54:48,222 INFO L130 PetriNetUnfolder]: 13/167 cut-off events. [2023-08-30 12:54:48,223 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:54:48,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 13/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 435 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2023-08-30 12:54:48,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 145 transitions, 302 flow [2023-08-30 12:54:48,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 145 transitions, 302 flow [2023-08-30 12:54:48,230 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:54:48,230 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 145 transitions, 302 flow [2023-08-30 12:54:48,231 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 145 transitions, 302 flow [2023-08-30 12:54:48,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 302 flow [2023-08-30 12:54:48,260 INFO L130 PetriNetUnfolder]: 13/167 cut-off events. [2023-08-30 12:54:48,260 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:54:48,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 13/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 435 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2023-08-30 12:54:48,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 9860 [2023-08-30 12:54:49,720 INFO L134 LiptonReduction]: Checked pairs total: 30885 [2023-08-30 12:54:49,720 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-30 12:54:49,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:54:49,725 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=true, 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;@56cc1de2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:54:49,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-30 12:54:49,728 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2023-08-30 12:54:49,729 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:54:49,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:49,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:49,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 12:54:49,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1160728081, now seen corresponding path program 1 times [2023-08-30 12:54:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:49,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546388139] [2023-08-30 12:54:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:49,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:49,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546388139] [2023-08-30 12:54:49,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546388139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:49,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:49,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:54:49,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927038535] [2023-08-30 12:54:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:49,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:54:49,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:54:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:54:49,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 250 [2023-08-30 12:54:49,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:49,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:49,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 250 [2023-08-30 12:54:49,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:50,065 INFO L130 PetriNetUnfolder]: 1028/1922 cut-off events. [2023-08-30 12:54:50,065 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 12:54:50,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3672 conditions, 1922 events. 1028/1922 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12260 event pairs, 924 based on Foata normal form. 38/1504 useless extension candidates. Maximal degree in co-relation 2901. Up to 1679 conditions per place. [2023-08-30 12:54:50,078 INFO L137 encePairwiseOnDemand]: 234/250 looper letters, 37 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 12:54:50,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 192 flow [2023-08-30 12:54:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:54:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:54:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-30 12:54:50,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186666666666667 [2023-08-30 12:54:50,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-30 12:54:50,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-30 12:54:50,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:50,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-30 12:54:50,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,087 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 148 flow. Second operand 3 states and 389 transitions. [2023-08-30 12:54:50,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 192 flow [2023-08-30 12:54:50,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 190 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 12:54:50,089 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 116 flow [2023-08-30 12:54:50,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-08-30 12:54:50,090 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2023-08-30 12:54:50,090 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 116 flow [2023-08-30 12:54:50,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:50,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:50,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:54:50,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 12:54:50,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1160728080, now seen corresponding path program 1 times [2023-08-30 12:54:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:50,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741202620] [2023-08-30 12:54:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:50,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:50,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:50,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741202620] [2023-08-30 12:54:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741202620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:50,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:50,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:54:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427998181] [2023-08-30 12:54:50,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:50,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:54:50,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:54:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:54:50,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 250 [2023-08-30 12:54:50,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:50,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 250 [2023-08-30 12:54:50,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:50,358 INFO L130 PetriNetUnfolder]: 1049/1946 cut-off events. [2023-08-30 12:54:50,358 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 12:54:50,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 1946 events. 1049/1946 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12405 event pairs, 487 based on Foata normal form. 0/1500 useless extension candidates. Maximal degree in co-relation 3721. Up to 1693 conditions per place. [2023-08-30 12:54:50,370 INFO L137 encePairwiseOnDemand]: 245/250 looper letters, 41 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-30 12:54:50,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 221 flow [2023-08-30 12:54:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:54:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:54:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-30 12:54:50,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093333333333333 [2023-08-30 12:54:50,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-30 12:54:50,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-30 12:54:50,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:50,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-30 12:54:50,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,385 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 116 flow. Second operand 3 states and 382 transitions. [2023-08-30 12:54:50,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 221 flow [2023-08-30 12:54:50,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:54:50,388 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 136 flow [2023-08-30 12:54:50,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-30 12:54:50,390 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-30 12:54:50,391 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 136 flow [2023-08-30 12:54:50,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:50,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:54:50,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 12:54:50,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1231837978, now seen corresponding path program 1 times [2023-08-30 12:54:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860847572] [2023-08-30 12:54:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:50,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:50,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860847572] [2023-08-30 12:54:50,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860847572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:50,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:50,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:54:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998601035] [2023-08-30 12:54:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:50,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:54:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:54:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:54:50,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 250 [2023-08-30 12:54:50,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:50,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 250 [2023-08-30 12:54:50,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:50,945 INFO L130 PetriNetUnfolder]: 1421/2746 cut-off events. [2023-08-30 12:54:50,945 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2023-08-30 12:54:50,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5658 conditions, 2746 events. 1421/2746 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18844 event pairs, 146 based on Foata normal form. 0/2142 useless extension candidates. Maximal degree in co-relation 5648. Up to 1827 conditions per place. [2023-08-30 12:54:50,962 INFO L137 encePairwiseOnDemand]: 239/250 looper letters, 69 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2023-08-30 12:54:50,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 419 flow [2023-08-30 12:54:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:54:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:54:50,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 621 transitions. [2023-08-30 12:54:50,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968 [2023-08-30 12:54:50,965 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 621 transitions. [2023-08-30 12:54:50,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 621 transitions. [2023-08-30 12:54:50,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:50,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 621 transitions. [2023-08-30 12:54:50,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.2) internal successors, (621), 5 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,969 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,970 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 136 flow. Second operand 5 states and 621 transitions. [2023-08-30 12:54:50,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 419 flow [2023-08-30 12:54:50,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 97 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:54:50,973 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 238 flow [2023-08-30 12:54:50,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-30 12:54:50,974 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2023-08-30 12:54:50,974 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 238 flow [2023-08-30 12:54:50,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:50,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:50,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:50,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:54:50,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 12:54:50,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1231837943, now seen corresponding path program 1 times [2023-08-30 12:54:50,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:50,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941995074] [2023-08-30 12:54:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:50,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:51,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:51,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941995074] [2023-08-30 12:54:51,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941995074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:51,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:51,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:54:51,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114911602] [2023-08-30 12:54:51,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:51,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:54:51,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:51,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:54:51,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:54:51,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 250 [2023-08-30 12:54:51,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:51,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:51,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 250 [2023-08-30 12:54:51,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:51,500 INFO L130 PetriNetUnfolder]: 1467/2927 cut-off events. [2023-08-30 12:54:51,501 INFO L131 PetriNetUnfolder]: For 2759/2775 co-relation queries the response was YES. [2023-08-30 12:54:51,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 2927 events. 1467/2927 cut-off events. For 2759/2775 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 20564 event pairs, 286 based on Foata normal form. 38/2684 useless extension candidates. Maximal degree in co-relation 7754. Up to 2249 conditions per place. [2023-08-30 12:54:51,523 INFO L137 encePairwiseOnDemand]: 240/250 looper letters, 70 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2023-08-30 12:54:51,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 494 flow [2023-08-30 12:54:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:54:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:54:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 504 transitions. [2023-08-30 12:54:51,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504 [2023-08-30 12:54:51,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 504 transitions. [2023-08-30 12:54:51,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 504 transitions. [2023-08-30 12:54:51,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:51,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 504 transitions. [2023-08-30 12:54:51,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:51,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:51,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:51,531 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 238 flow. Second operand 4 states and 504 transitions. [2023-08-30 12:54:51,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 494 flow [2023-08-30 12:54:51,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:54:51,541 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 283 flow [2023-08-30 12:54:51,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-30 12:54:51,543 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 12:54:51,544 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 283 flow [2023-08-30 12:54:51,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:51,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:51,544 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 12:54:51,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:54:51,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-08-30 12:54:51,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:51,545 INFO L85 PathProgramCache]: Analyzing trace with hash -977476665, now seen corresponding path program 1 times [2023-08-30 12:54:51,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:51,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262977001] [2023-08-30 12:54:51,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:51,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:54:51,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:54:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:54:51,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:54:51,566 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:54:51,566 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-08-30 12:54:51,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-08-30 12:54:51,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-08-30 12:54:51,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-08-30 12:54:51,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-08-30 12:54:51,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-08-30 12:54:51,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-08-30 12:54:51,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-08-30 12:54:51,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-08-30 12:54:51,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-08-30 12:54:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-08-30 12:54:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-08-30 12:54:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-08-30 12:54:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-08-30 12:54:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-08-30 12:54:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-08-30 12:54:51,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-08-30 12:54:51,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-08-30 12:54:51,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-08-30 12:54:51,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-08-30 12:54:51,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-08-30 12:54:51,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2023-08-30 12:54:51,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2023-08-30 12:54:51,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-08-30 12:54:51,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-08-30 12:54:51,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-08-30 12:54:51,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-08-30 12:54:51,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-08-30 12:54:51,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-08-30 12:54:51,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-08-30 12:54:51,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-08-30 12:54:51,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:54:51,571 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 12:54:51,572 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:54:51,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 12:54:51,621 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:54:51,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 204 transitions, 429 flow [2023-08-30 12:54:51,659 INFO L130 PetriNetUnfolder]: 19/238 cut-off events. [2023-08-30 12:54:51,659 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:54:51,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 238 events. 19/238 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 788 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-30 12:54:51,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 204 transitions, 429 flow [2023-08-30 12:54:51,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 204 transitions, 429 flow [2023-08-30 12:54:51,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:54:51,666 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 204 transitions, 429 flow [2023-08-30 12:54:51,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 204 transitions, 429 flow [2023-08-30 12:54:51,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 204 transitions, 429 flow [2023-08-30 12:54:51,688 INFO L130 PetriNetUnfolder]: 19/238 cut-off events. [2023-08-30 12:54:51,689 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:54:51,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 238 events. 19/238 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 788 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-30 12:54:51,703 INFO L119 LiptonReduction]: Number of co-enabled transitions 25056 [2023-08-30 12:54:53,516 INFO L134 LiptonReduction]: Checked pairs total: 81602 [2023-08-30 12:54:53,518 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-30 12:54:53,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:54:53,521 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=true, 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;@56cc1de2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:54:53,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-30 12:54:53,523 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-30 12:54:53,524 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:54:53,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:53,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:53,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:54:53,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash -864529820, now seen corresponding path program 1 times [2023-08-30 12:54:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980174963] [2023-08-30 12:54:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980174963] [2023-08-30 12:54:53,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980174963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:53,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:53,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:54:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866253535] [2023-08-30 12:54:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:53,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:54:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:54:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:54:53,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 355 [2023-08-30 12:54:53,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:53,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:53,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 355 [2023-08-30 12:54:53,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:58,073 INFO L130 PetriNetUnfolder]: 39608/58387 cut-off events. [2023-08-30 12:54:58,073 INFO L131 PetriNetUnfolder]: For 2362/2362 co-relation queries the response was YES. [2023-08-30 12:54:58,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115628 conditions, 58387 events. 39608/58387 cut-off events. For 2362/2362 co-relation queries the response was YES. Maximal size of possible extension queue 2188. Compared 459749 event pairs, 25401 based on Foata normal form. 760/41455 useless extension candidates. Maximal degree in co-relation 98135. Up to 55574 conditions per place. [2023-08-30 12:54:58,493 INFO L137 encePairwiseOnDemand]: 326/355 looper letters, 66 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-30 12:54:58,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 347 flow [2023-08-30 12:54:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:54:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:54:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-30 12:54:58,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5427230046948357 [2023-08-30 12:54:58,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-30 12:54:58,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-30 12:54:58,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:58,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-30 12:54:58,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:58,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:58,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 355.0) internal successors, (1420), 4 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:58,501 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 213 flow. Second operand 3 states and 578 transitions. [2023-08-30 12:54:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 347 flow [2023-08-30 12:54:58,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 87 transitions, 339 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 12:54:58,507 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 213 flow [2023-08-30 12:54:58,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-08-30 12:54:58,509 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -12 predicate places. [2023-08-30 12:54:58,511 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 213 flow [2023-08-30 12:54:58,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:58,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:58,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:58,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:54:58,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:54:58,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1884430113, now seen corresponding path program 1 times [2023-08-30 12:54:58,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:58,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538727149] [2023-08-30 12:54:58,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:58,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:54:58,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:58,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538727149] [2023-08-30 12:54:58,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538727149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:58,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:58,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:54:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785791109] [2023-08-30 12:54:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:58,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:54:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:54:58,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:54:58,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 355 [2023-08-30 12:54:58,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:58,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:58,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 355 [2023-08-30 12:54:58,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:55:02,621 INFO L130 PetriNetUnfolder]: 42716/63333 cut-off events. [2023-08-30 12:55:02,622 INFO L131 PetriNetUnfolder]: For 3565/3577 co-relation queries the response was YES. [2023-08-30 12:55:02,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135686 conditions, 63333 events. 42716/63333 cut-off events. For 3565/3577 co-relation queries the response was YES. Maximal size of possible extension queue 2269. Compared 499857 event pairs, 16907 based on Foata normal form. 12/44619 useless extension candidates. Maximal degree in co-relation 122414. Up to 58742 conditions per place. [2023-08-30 12:55:03,074 INFO L137 encePairwiseOnDemand]: 345/355 looper letters, 85 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2023-08-30 12:55:03,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 491 flow [2023-08-30 12:55:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:55:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:55:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 701 transitions. [2023-08-30 12:55:03,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936619718309859 [2023-08-30 12:55:03,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 701 transitions. [2023-08-30 12:55:03,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 701 transitions. [2023-08-30 12:55:03,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:55:03,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 701 transitions. [2023-08-30 12:55:03,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:03,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:03,082 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:03,082 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 213 flow. Second operand 4 states and 701 transitions. [2023-08-30 12:55:03,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 491 flow [2023-08-30 12:55:03,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 109 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:55:03,096 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 258 flow [2023-08-30 12:55:03,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2023-08-30 12:55:03,098 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, -9 predicate places. [2023-08-30 12:55:03,098 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 258 flow [2023-08-30 12:55:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:03,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:55:03,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:55:03,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:55:03,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:55:03,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:55:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash 629682342, now seen corresponding path program 1 times [2023-08-30 12:55:03,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:55:03,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493224410] [2023-08-30 12:55:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:55:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:55:03,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:55:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493224410] [2023-08-30 12:55:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493224410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:55:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411436473] [2023-08-30 12:55:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:03,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:55:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:55:03,319 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) [2023-08-30 12:55:03,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 12:55:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:03,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 12:55:03,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:55:03,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 12:55:03,552 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 12:55:03,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 12:55:03,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 12:55:03,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 12:55:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:55:03,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:55:03,731 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_95 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_95) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of3ForFork0_push_~#newTop~0#1.offset|) 2147483648)) is different from false [2023-08-30 12:55:03,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:55:03,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 60 [2023-08-30 12:55:03,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 12:55:03,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-30 12:55:03,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-08-30 12:55:03,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 12:55:03,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 12:55:03,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 38 [2023-08-30 12:55:03,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-30 12:55:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 12:55:04,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411436473] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:55:04,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:55:04,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-08-30 12:55:04,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987577518] [2023-08-30 12:55:04,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:55:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:55:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:55:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:55:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=145, Unknown=1, NotChecked=24, Total=210 [2023-08-30 12:55:04,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 355 [2023-08-30 12:55:04,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 258 flow. Second operand has 15 states, 15 states have (on average 124.8) internal successors, (1872), 15 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:04,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:55:04,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 355 [2023-08-30 12:55:04,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:55:19,904 INFO L130 PetriNetUnfolder]: 134045/203753 cut-off events. [2023-08-30 12:55:19,904 INFO L131 PetriNetUnfolder]: For 55985/56038 co-relation queries the response was YES. [2023-08-30 12:55:20,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496344 conditions, 203753 events. 134045/203753 cut-off events. For 55985/56038 co-relation queries the response was YES. Maximal size of possible extension queue 6467. Compared 1813863 event pairs, 16011 based on Foata normal form. 170/157206 useless extension candidates. Maximal degree in co-relation 491581. Up to 74300 conditions per place. [2023-08-30 12:55:21,350 INFO L137 encePairwiseOnDemand]: 295/355 looper letters, 612 selfloop transitions, 191 changer transitions 0/814 dead transitions. [2023-08-30 12:55:21,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 814 transitions, 3936 flow [2023-08-30 12:55:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:55:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:55:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3160 transitions. [2023-08-30 12:55:21,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46849518161601184 [2023-08-30 12:55:21,365 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3160 transitions. [2023-08-30 12:55:21,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3160 transitions. [2023-08-30 12:55:21,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:55:21,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3160 transitions. [2023-08-30 12:55:21,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 166.31578947368422) internal successors, (3160), 19 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:21,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 355.0) internal successors, (7100), 20 states have internal predecessors, (7100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:21,386 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 355.0) internal successors, (7100), 20 states have internal predecessors, (7100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:21,387 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 258 flow. Second operand 19 states and 3160 transitions. [2023-08-30 12:55:21,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 814 transitions, 3936 flow [2023-08-30 12:55:21,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 814 transitions, 3910 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:55:21,425 INFO L231 Difference]: Finished difference. Result has 119 places, 279 transitions, 2009 flow [2023-08-30 12:55:21,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2009, PETRI_PLACES=119, PETRI_TRANSITIONS=279} [2023-08-30 12:55:21,427 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 22 predicate places. [2023-08-30 12:55:21,427 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 279 transitions, 2009 flow [2023-08-30 12:55:21,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.8) internal successors, (1872), 15 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:21,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:55:21,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:55:21,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 12:55:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 12:55:21,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:55:21,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:55:21,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1535734200, now seen corresponding path program 1 times [2023-08-30 12:55:21,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:55:21,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850101506] [2023-08-30 12:55:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:55:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:55:21,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:55:21,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850101506] [2023-08-30 12:55:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850101506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:55:21,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:55:21,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:55:21,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395090111] [2023-08-30 12:55:21,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:55:21,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:55:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:55:21,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:55:21,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:55:21,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 355 [2023-08-30 12:55:21,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 279 transitions, 2009 flow. Second operand has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:21,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:55:21,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 355 [2023-08-30 12:55:21,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:55:43,763 INFO L130 PetriNetUnfolder]: 131136/197911 cut-off events. [2023-08-30 12:55:43,763 INFO L131 PetriNetUnfolder]: For 995955/1000687 co-relation queries the response was YES. [2023-08-30 12:55:44,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892427 conditions, 197911 events. 131136/197911 cut-off events. For 995955/1000687 co-relation queries the response was YES. Maximal size of possible extension queue 6209. Compared 1758620 event pairs, 59295 based on Foata normal form. 993/176251 useless extension candidates. Maximal degree in co-relation 844370. Up to 179886 conditions per place. [2023-08-30 12:55:45,928 INFO L137 encePairwiseOnDemand]: 345/355 looper letters, 274 selfloop transitions, 23 changer transitions 0/326 dead transitions. [2023-08-30 12:55:45,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 326 transitions, 2964 flow [2023-08-30 12:55:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:55:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:55:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 701 transitions. [2023-08-30 12:55:45,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936619718309859 [2023-08-30 12:55:45,931 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 701 transitions. [2023-08-30 12:55:45,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 701 transitions. [2023-08-30 12:55:45,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:55:45,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 701 transitions. [2023-08-30 12:55:45,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:45,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:45,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:45,936 INFO L175 Difference]: Start difference. First operand has 119 places, 279 transitions, 2009 flow. Second operand 4 states and 701 transitions. [2023-08-30 12:55:45,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 326 transitions, 2964 flow [2023-08-30 12:55:59,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 326 transitions, 2888 flow, removed 34 selfloop flow, removed 1 redundant places. [2023-08-30 12:55:59,187 INFO L231 Difference]: Finished difference. Result has 122 places, 294 transitions, 2159 flow [2023-08-30 12:55:59,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2159, PETRI_PLACES=122, PETRI_TRANSITIONS=294} [2023-08-30 12:55:59,188 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 25 predicate places. [2023-08-30 12:55:59,189 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 294 transitions, 2159 flow [2023-08-30 12:55:59,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:59,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:55:59,189 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:55:59,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:55:59,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:55:59,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:55:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1666671116, now seen corresponding path program 1 times [2023-08-30 12:55:59,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:55:59,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373979859] [2023-08-30 12:55:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:59,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:55:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:55:59,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:55:59,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373979859] [2023-08-30 12:55:59,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373979859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:55:59,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:55:59,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:55:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729826644] [2023-08-30 12:55:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:55:59,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:55:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:55:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:55:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:55:59,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 355 [2023-08-30 12:55:59,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 294 transitions, 2159 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:59,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:55:59,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 355 [2023-08-30 12:55:59,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:56:21,576 INFO L130 PetriNetUnfolder]: 130590/199049 cut-off events. [2023-08-30 12:56:21,577 INFO L131 PetriNetUnfolder]: For 1143264/1148337 co-relation queries the response was YES. [2023-08-30 12:56:22,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 910275 conditions, 199049 events. 130590/199049 cut-off events. For 1143264/1148337 co-relation queries the response was YES. Maximal size of possible extension queue 6240. Compared 1794064 event pairs, 46743 based on Foata normal form. 3762/184457 useless extension candidates. Maximal degree in co-relation 867451. Up to 125503 conditions per place. [2023-08-30 12:56:23,854 INFO L137 encePairwiseOnDemand]: 342/355 looper letters, 288 selfloop transitions, 97 changer transitions 0/417 dead transitions. [2023-08-30 12:56:23,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 417 transitions, 3851 flow [2023-08-30 12:56:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:56:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:56:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 753 transitions. [2023-08-30 12:56:23,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530281690140845 [2023-08-30 12:56:23,856 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 753 transitions. [2023-08-30 12:56:23,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 753 transitions. [2023-08-30 12:56:23,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:56:23,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 753 transitions. [2023-08-30 12:56:23,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.25) internal successors, (753), 4 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:23,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:23,861 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:23,861 INFO L175 Difference]: Start difference. First operand has 122 places, 294 transitions, 2159 flow. Second operand 4 states and 753 transitions. [2023-08-30 12:56:23,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 417 transitions, 3851 flow [2023-08-30 12:56:34,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 417 transitions, 3789 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-30 12:56:34,236 INFO L231 Difference]: Finished difference. Result has 125 places, 353 transitions, 3119 flow [2023-08-30 12:56:34,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3119, PETRI_PLACES=125, PETRI_TRANSITIONS=353} [2023-08-30 12:56:34,237 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 28 predicate places. [2023-08-30 12:56:34,237 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 353 transitions, 3119 flow [2023-08-30 12:56:34,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:34,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:56:34,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:56:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:56:34,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:56:34,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:56:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1666671115, now seen corresponding path program 1 times [2023-08-30 12:56:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:56:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694151926] [2023-08-30 12:56:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:56:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:56:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:56:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:56:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:56:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694151926] [2023-08-30 12:56:34,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694151926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:56:34,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:56:34,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:56:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460771597] [2023-08-30 12:56:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:56:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:56:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:56:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:56:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:56:34,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 355 [2023-08-30 12:56:34,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 353 transitions, 3119 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:34,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:56:34,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 355 [2023-08-30 12:56:34,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:56:45,215 INFO L130 PetriNetUnfolder]: 68911/101574 cut-off events. [2023-08-30 12:56:45,215 INFO L131 PetriNetUnfolder]: For 771197/774094 co-relation queries the response was YES. [2023-08-30 12:56:45,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462429 conditions, 101574 events. 68911/101574 cut-off events. For 771197/774094 co-relation queries the response was YES. Maximal size of possible extension queue 3073. Compared 802562 event pairs, 40252 based on Foata normal form. 12103/102866 useless extension candidates. Maximal degree in co-relation 435608. Up to 92198 conditions per place. [2023-08-30 12:56:46,588 INFO L137 encePairwiseOnDemand]: 345/355 looper letters, 167 selfloop transitions, 8 changer transitions 0/206 dead transitions. [2023-08-30 12:56:46,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 206 transitions, 1987 flow [2023-08-30 12:56:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:56:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:56:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 694 transitions. [2023-08-30 12:56:46,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887323943661972 [2023-08-30 12:56:46,591 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 694 transitions. [2023-08-30 12:56:46,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 694 transitions. [2023-08-30 12:56:46,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:56:46,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 694 transitions. [2023-08-30 12:56:46,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:46,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:46,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:46,595 INFO L175 Difference]: Start difference. First operand has 125 places, 353 transitions, 3119 flow. Second operand 4 states and 694 transitions. [2023-08-30 12:56:46,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 206 transitions, 1987 flow [2023-08-30 12:56:49,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 206 transitions, 1821 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-08-30 12:56:49,707 INFO L231 Difference]: Finished difference. Result has 115 places, 201 transitions, 1439 flow [2023-08-30 12:56:49,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1439, PETRI_PLACES=115, PETRI_TRANSITIONS=201} [2023-08-30 12:56:49,707 INFO L281 CegarLoopForPetriNet]: 97 programPoint places, 18 predicate places. [2023-08-30 12:56:49,708 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 201 transitions, 1439 flow [2023-08-30 12:56:49,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:56:49,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:56:49,708 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 12:56:49,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:56:49,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-08-30 12:56:49,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:56:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1732661604, now seen corresponding path program 1 times [2023-08-30 12:56:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:56:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007702101] [2023-08-30 12:56:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:56:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:56:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:56:49,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:56:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:56:49,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:56:49,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:56:49,741 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-08-30 12:56:49,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-08-30 12:56:49,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-08-30 12:56:49,742 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-08-30 12:56:49,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-08-30 12:56:49,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-08-30 12:56:49,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-08-30 12:56:49,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-08-30 12:56:49,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-08-30 12:56:49,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-08-30 12:56:49,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-08-30 12:56:49,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-08-30 12:56:49,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-08-30 12:56:49,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-08-30 12:56:49,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-08-30 12:56:49,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-08-30 12:56:49,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-08-30 12:56:49,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-08-30 12:56:49,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-08-30 12:56:49,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-08-30 12:56:49,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-08-30 12:56:49,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-08-30 12:56:49,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2023-08-30 12:56:49,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2023-08-30 12:56:49,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2023-08-30 12:56:49,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-08-30 12:56:49,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-08-30 12:56:49,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-08-30 12:56:49,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-08-30 12:56:49,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-08-30 12:56:49,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-08-30 12:56:49,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-08-30 12:56:49,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-08-30 12:56:49,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-08-30 12:56:49,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-08-30 12:56:49,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-08-30 12:56:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-08-30 12:56:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-08-30 12:56:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-08-30 12:56:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-08-30 12:56:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-08-30 12:56:49,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 12:56:49,763 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:56:49,763 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:56:49,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 12:56:49,803 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:56:49,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 263 transitions, 558 flow [2023-08-30 12:56:49,839 INFO L130 PetriNetUnfolder]: 25/309 cut-off events. [2023-08-30 12:56:49,839 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 12:56:49,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 309 events. 25/309 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1138 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 246. Up to 10 conditions per place. [2023-08-30 12:56:49,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 263 transitions, 558 flow [2023-08-30 12:56:49,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 263 transitions, 558 flow [2023-08-30 12:56:49,850 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:56:49,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 263 transitions, 558 flow [2023-08-30 12:56:49,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 263 transitions, 558 flow [2023-08-30 12:56:49,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 263 transitions, 558 flow [2023-08-30 12:56:49,882 INFO L130 PetriNetUnfolder]: 25/309 cut-off events. [2023-08-30 12:56:49,883 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 12:56:49,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 309 events. 25/309 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1138 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 246. Up to 10 conditions per place. [2023-08-30 12:56:49,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 47096 [2023-08-30 12:56:52,309 INFO L134 LiptonReduction]: Checked pairs total: 160776 [2023-08-30 12:56:52,309 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-08-30 12:56:52,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:56:52,311 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=true, 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;@56cc1de2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:56:52,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-08-30 12:56:52,314 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-30 12:56:52,314 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:56:52,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:56:52,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:56:52,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2023-08-30 12:56:52,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:56:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2040494259, now seen corresponding path program 1 times [2023-08-30 12:56:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:56:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610692652] [2023-08-30 12:56:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:56:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:56:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:56:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:56:52,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:56:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610692652] [2023-08-30 12:56:52,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610692652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:56:52,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:56:52,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:56:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756219442] [2023-08-30 12:56:52,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:56:52,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:56:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:56:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:56:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:56:52,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 455 [2023-08-30 12:56:52,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 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) [2023-08-30 12:56:52,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:56:52,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 455 [2023-08-30 12:56:52,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand