./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.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/35_double_lock_p3_vs.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 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --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 12:53:06,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:53:06,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:53:06,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:53:06,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:53:06,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:53:06,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:53:06,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:53:06,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:53:06,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:53:06,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:53:06,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:53:06,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:53:06,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:53:06,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:53:06,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:53:06,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:53:06,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:53:06,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:53:06,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:53:06,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:53:06,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:53:06,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:53:06,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:53:06,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:53:06,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:53:06,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:53:06,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:53:06,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:53:06,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:53:06,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:53:06,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:53:06,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:53:06,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:53:06,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:53:06,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:53:06,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:53:06,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:53:06,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:53:06,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:53:06,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:53:06,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:53:06,174 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:53:06,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:53:06,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:53:06,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:53:06,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:53:06,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:53:06,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:53:06,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:53:06,178 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:53:06,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:53:06,179 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:53:06,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:53:06,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:53:06,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:53:06,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:53:06,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:53:06,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:53:06,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:53:06,181 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:53:06,181 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:53:06,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:53:06,181 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:53:06,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:53:06,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:53:06,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:53:06,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:53:06,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:53:06,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:53:06,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:53:06,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:53:06,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:53:06,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:53:06,184 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:53:06,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:53:06,184 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:53:06,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:53:06,184 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:53:06,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:53:06,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:53:06,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:53:06,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:53:06,527 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:53:06,528 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:53:06,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-30 12:53:07,790 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:53:08,100 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:53:08,102 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs.i [2023-08-30 12:53:08,118 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303134e7c/e2edc9494a344b70ae747a632641c061/FLAG1b73af8e3 [2023-08-30 12:53:08,140 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303134e7c/e2edc9494a344b70ae747a632641c061 [2023-08-30 12:53:08,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:53:08,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:53:08,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:53:08,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:53:08,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:53:08,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0bd0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08, skipping insertion in model container [2023-08-30 12:53:08,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:53:08,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:53:08,534 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/35_double_lock_p3_vs.i[30553,30566] [2023-08-30 12:53:08,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:53:08,556 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:53:08,650 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/35_double_lock_p3_vs.i[30553,30566] [2023-08-30 12:53:08,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:53:08,692 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:53:08,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08 WrapperNode [2023-08-30 12:53:08,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:53:08,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:53:08,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:53:08,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:53:08,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,730 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 134 [2023-08-30 12:53:08,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:53:08,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:53:08,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:53:08,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:53:08,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:53:08,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:53:08,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:53:08,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:53:08,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (1/1) ... [2023-08-30 12:53:08,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:53:08,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:53:08,794 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 12:53:08,820 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 12:53:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:53:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-30 12:53:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-30 12:53:08,841 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 12:53:08,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 12:53:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:53:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:53:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:53:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:53:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:53:08,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:53:08,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:53:08,844 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 12:53:09,030 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:53:09,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:53:09,278 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:53:09,352 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:53:09,352 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:53:09,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:53:09 BoogieIcfgContainer [2023-08-30 12:53:09,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:53:09,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:53:09,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:53:09,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:53:09,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:53:08" (1/3) ... [2023-08-30 12:53:09,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4543b164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:53:09, skipping insertion in model container [2023-08-30 12:53:09,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:53:08" (2/3) ... [2023-08-30 12:53:09,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4543b164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:53:09, skipping insertion in model container [2023-08-30 12:53:09,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:53:09" (3/3) ... [2023-08-30 12:53:09,374 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-08-30 12:53:09,381 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:53:09,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:53:09,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:53:09,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:53:09,435 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:53:09,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 192 flow [2023-08-30 12:53:09,514 INFO L130 PetriNetUnfolder]: 6/100 cut-off events. [2023-08-30 12:53:09,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:53:09,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 100 events. 6/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-30 12:53:09,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 192 flow [2023-08-30 12:53:09,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 90 transitions, 188 flow [2023-08-30 12:53:09,529 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:53:09,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 90 transitions, 188 flow [2023-08-30 12:53:09,547 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 90 transitions, 188 flow [2023-08-30 12:53:09,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 90 transitions, 188 flow [2023-08-30 12:53:09,582 INFO L130 PetriNetUnfolder]: 6/100 cut-off events. [2023-08-30 12:53:09,582 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:53:09,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 100 events. 6/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-30 12:53:09,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 2534 [2023-08-30 12:53:12,316 INFO L134 LiptonReduction]: Checked pairs total: 4886 [2023-08-30 12:53:12,316 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-30 12:53:12,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:53:12,333 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;@5d4eb015, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:53:12,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:53:12,338 INFO L130 PetriNetUnfolder]: 2/15 cut-off events. [2023-08-30 12:53:12,338 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:53:12,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:12,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:53:12,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:53:12,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash -984885121, now seen corresponding path program 1 times [2023-08-30 12:53:12,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:12,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011801451] [2023-08-30 12:53:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:12,581 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 12:53:12,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:12,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011801451] [2023-08-30 12:53:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011801451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:12,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:12,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:53:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502340224] [2023-08-30 12:53:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:12,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:12,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 171 [2023-08-30 12:53:12,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 12:53:12,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:12,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 171 [2023-08-30 12:53:12,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:12,777 INFO L130 PetriNetUnfolder]: 240/397 cut-off events. [2023-08-30 12:53:12,779 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:53:12,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 397 events. 240/397 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1607 event pairs, 33 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 794. Up to 313 conditions per place. [2023-08-30 12:53:12,789 INFO L137 encePairwiseOnDemand]: 162/171 looper letters, 23 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-08-30 12:53:12,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 122 flow [2023-08-30 12:53:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:53:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:53:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-30 12:53:12,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834307992202729 [2023-08-30 12:53:12,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-30 12:53:12,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-30 12:53:12,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:12,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-30 12:53:12,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 12:53:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 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 12:53:12,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 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 12:53:12,814 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 72 flow. Second operand 3 states and 248 transitions. [2023-08-30 12:53:12,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 122 flow [2023-08-30 12:53:12,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:12,817 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 67 flow [2023-08-30 12:53:12,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-30 12:53:12,822 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2023-08-30 12:53:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 67 flow [2023-08-30 12:53:12,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 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 12:53:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:12,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:53:12,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:53:12,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -466667226, now seen corresponding path program 1 times [2023-08-30 12:53:12,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:12,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560499571] [2023-08-30 12:53:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:12,958 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 12:53:12,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560499571] [2023-08-30 12:53:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560499571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:12,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:12,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:53:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196122944] [2023-08-30 12:53:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:53:12,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:53:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:53:12,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 171 [2023-08-30 12:53:12,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 12:53:12,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:12,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 171 [2023-08-30 12:53:12,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:13,072 INFO L130 PetriNetUnfolder]: 210/349 cut-off events. [2023-08-30 12:53:13,074 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:53:13,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 349 events. 210/349 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1358 event pairs, 21 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 707. Up to 265 conditions per place. [2023-08-30 12:53:13,076 INFO L137 encePairwiseOnDemand]: 166/171 looper letters, 26 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2023-08-30 12:53:13,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 133 flow [2023-08-30 12:53:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:53:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:53:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2023-08-30 12:53:13,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43128654970760233 [2023-08-30 12:53:13,081 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 295 transitions. [2023-08-30 12:53:13,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 295 transitions. [2023-08-30 12:53:13,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:13,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 295 transitions. [2023-08-30 12:53:13,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 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 12:53:13,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 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 12:53:13,087 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 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 12:53:13,087 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 67 flow. Second operand 4 states and 295 transitions. [2023-08-30 12:53:13,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 133 flow [2023-08-30 12:53:13,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 129 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:53:13,088 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 61 flow [2023-08-30 12:53:13,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-30 12:53:13,089 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2023-08-30 12:53:13,089 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 61 flow [2023-08-30 12:53:13,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 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 12:53:13,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:13,090 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:13,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:53:13,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 12:53:13,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1581845169, now seen corresponding path program 1 times [2023-08-30 12:53:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:13,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413475031] [2023-08-30 12:53:13,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:13,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:53:13,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:53:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:53:13,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:53:13,128 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:53:13,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 12:53:13,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 12:53:13,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:53:13,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:53:13,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:53:13,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:53:13,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:53:13,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:53:13,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 12:53:13,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-30 12:53:13,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:53:13,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:53:13,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:53:13,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:53:13,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:53:13,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:53:13,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:53:13,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:53:13,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:53:13,135 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 12:53:13,138 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:53:13,138 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 12:53:13,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:53:13,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 148 transitions, 320 flow [2023-08-30 12:53:13,216 INFO L130 PetriNetUnfolder]: 8/156 cut-off events. [2023-08-30 12:53:13,216 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:53:13,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 156 events. 8/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 165. Up to 6 conditions per place. [2023-08-30 12:53:13,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 148 transitions, 320 flow [2023-08-30 12:53:13,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 134 transitions, 283 flow [2023-08-30 12:53:13,220 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:53:13,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 134 transitions, 283 flow [2023-08-30 12:53:13,222 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 134 transitions, 283 flow [2023-08-30 12:53:13,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 134 transitions, 283 flow [2023-08-30 12:53:13,247 INFO L130 PetriNetUnfolder]: 8/156 cut-off events. [2023-08-30 12:53:13,247 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:53:13,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 8/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 301 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 144. Up to 6 conditions per place. [2023-08-30 12:53:13,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 8492 [2023-08-30 12:53:15,681 INFO L134 LiptonReduction]: Checked pairs total: 21707 [2023-08-30 12:53:15,681 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-30 12:53:15,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:53:15,685 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;@5d4eb015, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:53:15,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-30 12:53:15,687 INFO L130 PetriNetUnfolder]: 1/16 cut-off events. [2023-08-30 12:53:15,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:53:15,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:15,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:15,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 12:53:15,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1404388021, now seen corresponding path program 1 times [2023-08-30 12:53:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357672240] [2023-08-30 12:53:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:15,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:15,745 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 12:53:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:15,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357672240] [2023-08-30 12:53:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357672240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:15,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:15,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:53:15,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706457109] [2023-08-30 12:53:15,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:15,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:15,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 255 [2023-08-30 12:53:15,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:15,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:15,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 255 [2023-08-30 12:53:15,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:16,927 INFO L130 PetriNetUnfolder]: 8884/12565 cut-off events. [2023-08-30 12:53:16,927 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-30 12:53:16,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25364 conditions, 12565 events. 8884/12565 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 75092 event pairs, 2441 based on Foata normal form. 0/9618 useless extension candidates. Maximal degree in co-relation 25353. Up to 12017 conditions per place. [2023-08-30 12:53:17,019 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 61 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-30 12:53:17,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 284 flow [2023-08-30 12:53:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:53:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:53:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-08-30 12:53:17,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-08-30 12:53:17,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-08-30 12:53:17,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-08-30 12:53:17,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:17,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-08-30 12:53:17,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 12:53:17,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 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 12:53:17,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 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 12:53:17,036 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 129 flow. Second operand 3 states and 405 transitions. [2023-08-30 12:53:17,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 284 flow [2023-08-30 12:53:17,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 281 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:17,040 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 147 flow [2023-08-30 12:53:17,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-30 12:53:17,042 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-08-30 12:53:17,042 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 147 flow [2023-08-30 12:53:17,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:53:17,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:17,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:17,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:53:17,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 12:53:17,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash 997181643, now seen corresponding path program 1 times [2023-08-30 12:53:17,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:17,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614929810] [2023-08-30 12:53:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:17,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:17,103 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 12:53:17,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:17,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614929810] [2023-08-30 12:53:17,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614929810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:17,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:17,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:53:17,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632902129] [2023-08-30 12:53:17,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:17,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:53:17,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:17,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:53:17,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:53:17,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 255 [2023-08-30 12:53:17,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 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 12:53:17,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:17,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 255 [2023-08-30 12:53:17,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:18,641 INFO L130 PetriNetUnfolder]: 11228/16073 cut-off events. [2023-08-30 12:53:18,642 INFO L131 PetriNetUnfolder]: For 802/802 co-relation queries the response was YES. [2023-08-30 12:53:18,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33314 conditions, 16073 events. 11228/16073 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 103927 event pairs, 1379 based on Foata normal form. 0/12880 useless extension candidates. Maximal degree in co-relation 33301. Up to 9989 conditions per place. [2023-08-30 12:53:18,756 INFO L137 encePairwiseOnDemand]: 228/255 looper letters, 126 selfloop transitions, 34 changer transitions 0/164 dead transitions. [2023-08-30 12:53:18,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 164 transitions, 720 flow [2023-08-30 12:53:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:53:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:53:18,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 915 transitions. [2023-08-30 12:53:18,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2023-08-30 12:53:18,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 915 transitions. [2023-08-30 12:53:18,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 915 transitions. [2023-08-30 12:53:18,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:18,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 915 transitions. [2023-08-30 12:53:18,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.71428571428572) internal successors, (915), 7 states have internal predecessors, (915), 0 states have call successors, (0), 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 12:53:18,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 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 12:53:18,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 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 12:53:18,771 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 147 flow. Second operand 7 states and 915 transitions. [2023-08-30 12:53:18,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 164 transitions, 720 flow [2023-08-30 12:53:18,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 164 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:18,775 INFO L231 Difference]: Finished difference. Result has 72 places, 88 transitions, 433 flow [2023-08-30 12:53:18,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=72, PETRI_TRANSITIONS=88} [2023-08-30 12:53:18,776 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2023-08-30 12:53:18,777 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 88 transitions, 433 flow [2023-08-30 12:53:18,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 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 12:53:18,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:18,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:18,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:53:18,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 12:53:18,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash 997181644, now seen corresponding path program 1 times [2023-08-30 12:53:18,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:18,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249872880] [2023-08-30 12:53:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:18,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:18,869 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 12:53:18,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:18,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249872880] [2023-08-30 12:53:18,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249872880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:18,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:18,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:53:18,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4781669] [2023-08-30 12:53:18,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:18,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:53:18,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:18,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:53:18,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:53:18,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 255 [2023-08-30 12:53:18,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 433 flow. Second operand has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 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 12:53:18,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:18,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 255 [2023-08-30 12:53:18,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:20,556 INFO L130 PetriNetUnfolder]: 11708/16977 cut-off events. [2023-08-30 12:53:20,556 INFO L131 PetriNetUnfolder]: For 6856/6856 co-relation queries the response was YES. [2023-08-30 12:53:20,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44772 conditions, 16977 events. 11708/16977 cut-off events. For 6856/6856 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 113559 event pairs, 1067 based on Foata normal form. 312/16816 useless extension candidates. Maximal degree in co-relation 44753. Up to 11333 conditions per place. [2023-08-30 12:53:20,699 INFO L137 encePairwiseOnDemand]: 228/255 looper letters, 138 selfloop transitions, 43 changer transitions 0/185 dead transitions. [2023-08-30 12:53:20,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 185 transitions, 1145 flow [2023-08-30 12:53:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:53:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:53:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2023-08-30 12:53:20,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103641456582633 [2023-08-30 12:53:20,703 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2023-08-30 12:53:20,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2023-08-30 12:53:20,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:20,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2023-08-30 12:53:20,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 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 12:53:20,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 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 12:53:20,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 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 12:53:20,711 INFO L175 Difference]: Start difference. First operand has 72 places, 88 transitions, 433 flow. Second operand 7 states and 911 transitions. [2023-08-30 12:53:20,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 185 transitions, 1145 flow [2023-08-30 12:53:20,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 185 transitions, 1137 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:20,733 INFO L231 Difference]: Finished difference. Result has 81 places, 117 transitions, 843 flow [2023-08-30 12:53:20,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=843, PETRI_PLACES=81, PETRI_TRANSITIONS=117} [2023-08-30 12:53:20,736 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2023-08-30 12:53:20,736 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 117 transitions, 843 flow [2023-08-30 12:53:20,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 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 12:53:20,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:20,737 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:20,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:53:20,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-30 12:53:20,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1108069067, now seen corresponding path program 1 times [2023-08-30 12:53:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:20,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354971263] [2023-08-30 12:53:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:53:20,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 12:53:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 12:53:20,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 12:53:20,774 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 12:53:20,775 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-08-30 12:53:20,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2023-08-30 12:53:20,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2023-08-30 12:53:20,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2023-08-30 12:53:20,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2023-08-30 12:53:20,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2023-08-30 12:53:20,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2023-08-30 12:53:20,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2023-08-30 12:53:20,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2023-08-30 12:53:20,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2023-08-30 12:53:20,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2023-08-30 12:53:20,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2023-08-30 12:53:20,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2023-08-30 12:53:20,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2023-08-30 12:53:20,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2023-08-30 12:53:20,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2023-08-30 12:53:20,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2023-08-30 12:53:20,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2023-08-30 12:53:20,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2023-08-30 12:53:20,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2023-08-30 12:53:20,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2023-08-30 12:53:20,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2023-08-30 12:53:20,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2023-08-30 12:53:20,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2023-08-30 12:53:20,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2023-08-30 12:53:20,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2023-08-30 12:53:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:53:20,789 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 12:53:20,790 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 12:53:20,790 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 12:53:20,841 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:53:20,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 205 transitions, 452 flow [2023-08-30 12:53:20,883 INFO L130 PetriNetUnfolder]: 10/212 cut-off events. [2023-08-30 12:53:20,883 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:53:20,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 212 events. 10/212 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 543 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 226. Up to 8 conditions per place. [2023-08-30 12:53:20,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 205 transitions, 452 flow [2023-08-30 12:53:20,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 178 transitions, 380 flow [2023-08-30 12:53:20,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:53:20,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 178 transitions, 380 flow [2023-08-30 12:53:20,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 178 transitions, 380 flow [2023-08-30 12:53:20,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 178 transitions, 380 flow [2023-08-30 12:53:20,913 INFO L130 PetriNetUnfolder]: 10/212 cut-off events. [2023-08-30 12:53:20,914 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 12:53:20,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 212 events. 10/212 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 543 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 205. Up to 8 conditions per place. [2023-08-30 12:53:20,924 INFO L119 LiptonReduction]: Number of co-enabled transitions 18234 [2023-08-30 12:53:23,934 INFO L134 LiptonReduction]: Checked pairs total: 50871 [2023-08-30 12:53:23,934 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-30 12:53:23,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:53:23,936 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;@5d4eb015, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:53:23,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-30 12:53:23,938 INFO L130 PetriNetUnfolder]: 2/17 cut-off events. [2023-08-30 12:53:23,938 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:53:23,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:23,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:23,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 12:53:23,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash -165814907, now seen corresponding path program 1 times [2023-08-30 12:53:23,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:23,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275388377] [2023-08-30 12:53:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:23,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:23,983 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 12:53:23,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275388377] [2023-08-30 12:53:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275388377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:23,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:53:23,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428046376] [2023-08-30 12:53:23,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:23,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:23,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:24,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 350 [2023-08-30 12:53:24,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 12:53:24,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:24,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 350 [2023-08-30 12:53:24,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:53:45,699 INFO L130 PetriNetUnfolder]: 245211/325510 cut-off events. [2023-08-30 12:53:45,699 INFO L131 PetriNetUnfolder]: For 10932/10932 co-relation queries the response was YES. [2023-08-30 12:53:46,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657426 conditions, 325510 events. 245211/325510 cut-off events. For 10932/10932 co-relation queries the response was YES. Maximal size of possible extension queue 11165. Compared 2476719 event pairs, 92956 based on Foata normal form. 26275/272006 useless extension candidates. Maximal degree in co-relation 657414. Up to 217915 conditions per place. [2023-08-30 12:53:48,074 INFO L137 encePairwiseOnDemand]: 310/350 looper letters, 101 selfloop transitions, 25 changer transitions 0/132 dead transitions. [2023-08-30 12:53:48,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 552 flow [2023-08-30 12:53:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:53:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:53:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-30 12:53:48,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685714285714286 [2023-08-30 12:53:48,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-30 12:53:48,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-30 12:53:48,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:53:48,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-30 12:53:48,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 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 12:53:48,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 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 12:53:48,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 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 12:53:48,081 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 184 flow. Second operand 3 states and 597 transitions. [2023-08-30 12:53:48,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 552 flow [2023-08-30 12:53:48,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 543 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 12:53:48,094 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 391 flow [2023-08-30 12:53:48,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2023-08-30 12:53:48,095 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2023-08-30 12:53:48,095 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 391 flow [2023-08-30 12:53:48,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 12:53:48,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:53:48,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:53:48,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:53:48,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 12:53:48,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:53:48,097 INFO L85 PathProgramCache]: Analyzing trace with hash -165814876, now seen corresponding path program 1 times [2023-08-30 12:53:48,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:53:48,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885346552] [2023-08-30 12:53:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:53:48,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:53:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:53:48,123 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 12:53:48,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:53:48,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885346552] [2023-08-30 12:53:48,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885346552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:53:48,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:53:48,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:53:48,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53517431] [2023-08-30 12:53:48,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:53:48,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:53:48,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:53:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:53:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:53:48,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 350 [2023-08-30 12:53:48,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 12:53:48,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:53:48,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 350 [2023-08-30 12:53:48,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:15,302 INFO L130 PetriNetUnfolder]: 288483/386473 cut-off events. [2023-08-30 12:54:15,302 INFO L131 PetriNetUnfolder]: For 80090/80090 co-relation queries the response was YES. [2023-08-30 12:54:16,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947238 conditions, 386473 events. 288483/386473 cut-off events. For 80090/80090 co-relation queries the response was YES. Maximal size of possible extension queue 14129. Compared 3087427 event pairs, 76815 based on Foata normal form. 10890/385746 useless extension candidates. Maximal degree in co-relation 947223. Up to 283756 conditions per place. [2023-08-30 12:54:18,140 INFO L137 encePairwiseOnDemand]: 313/350 looper letters, 125 selfloop transitions, 28 changer transitions 0/159 dead transitions. [2023-08-30 12:54:18,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 883 flow [2023-08-30 12:54:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:54:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:54:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-30 12:54:18,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5628571428571428 [2023-08-30 12:54:18,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-30 12:54:18,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-30 12:54:18,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:18,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-30 12:54:18,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:18,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 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 12:54:18,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 350.0) internal successors, (1400), 4 states have internal predecessors, (1400), 0 states have call successors, (0), 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 12:54:18,147 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 391 flow. Second operand 3 states and 591 transitions. [2023-08-30 12:54:18,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 883 flow [2023-08-30 12:54:21,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 159 transitions, 827 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:54:21,649 INFO L231 Difference]: Finished difference. Result has 88 places, 128 transitions, 645 flow [2023-08-30 12:54:21,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=645, PETRI_PLACES=88, PETRI_TRANSITIONS=128} [2023-08-30 12:54:21,650 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2023-08-30 12:54:21,650 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 128 transitions, 645 flow [2023-08-30 12:54:21,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 12:54:21,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:54:21,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:54:21,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:54:21,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 12:54:21,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:54:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash -434528837, now seen corresponding path program 1 times [2023-08-30 12:54:21,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:54:21,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824652346] [2023-08-30 12:54:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:54:21,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:54:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:54:21,698 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 12:54:21,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:54:21,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824652346] [2023-08-30 12:54:21,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824652346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:54:21,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:54:21,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:54:21,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601765465] [2023-08-30 12:54:21,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:54:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:54:21,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:54:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:54:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:54:21,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 350 [2023-08-30 12:54:21,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 128 transitions, 645 flow. Second operand has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:54:21,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:54:21,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 350 [2023-08-30 12:54:21,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:54:54,228 INFO L130 PetriNetUnfolder]: 345180/457461 cut-off events. [2023-08-30 12:54:54,228 INFO L131 PetriNetUnfolder]: For 212268/212268 co-relation queries the response was YES. [2023-08-30 12:54:55,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262314 conditions, 457461 events. 345180/457461 cut-off events. For 212268/212268 co-relation queries the response was YES. Maximal size of possible extension queue 16887. Compared 3653468 event pairs, 40812 based on Foata normal form. 4662/450422 useless extension candidates. Maximal degree in co-relation 1262297. Up to 292534 conditions per place. [2023-08-30 12:54:57,706 INFO L137 encePairwiseOnDemand]: 314/350 looper letters, 251 selfloop transitions, 75 changer transitions 0/331 dead transitions. [2023-08-30 12:54:57,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 331 transitions, 2158 flow [2023-08-30 12:54:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:54:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:54:57,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1289 transitions. [2023-08-30 12:54:57,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261224489795918 [2023-08-30 12:54:57,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1289 transitions. [2023-08-30 12:54:57,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1289 transitions. [2023-08-30 12:54:57,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:54:57,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1289 transitions. [2023-08-30 12:54:57,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 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 12:54:57,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 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 12:54:57,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 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 12:54:57,718 INFO L175 Difference]: Start difference. First operand has 88 places, 128 transitions, 645 flow. Second operand 7 states and 1289 transitions. [2023-08-30 12:54:57,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 331 transitions, 2158 flow [2023-08-30 12:55:02,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 331 transitions, 2062 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:55:02,178 INFO L231 Difference]: Finished difference. Result has 96 places, 183 transitions, 1299 flow [2023-08-30 12:55:02,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1299, PETRI_PLACES=96, PETRI_TRANSITIONS=183} [2023-08-30 12:55:02,179 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2023-08-30 12:55:02,179 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 183 transitions, 1299 flow [2023-08-30 12:55:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:02,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:55:02,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:55:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:55:02,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 12:55:02,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:55:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -434528838, now seen corresponding path program 1 times [2023-08-30 12:55:02,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:55:02,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018884575] [2023-08-30 12:55:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:55:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:02,224 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 12:55:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:55:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018884575] [2023-08-30 12:55:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018884575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:55:02,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:55:02,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:55:02,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701338222] [2023-08-30 12:55:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:55:02,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:55:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:55:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:55:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:55:02,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 350 [2023-08-30 12:55:02,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 183 transitions, 1299 flow. Second operand has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:02,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:55:02,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 350 [2023-08-30 12:55:02,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:55:43,774 INFO L130 PetriNetUnfolder]: 360669/480642 cut-off events. [2023-08-30 12:55:43,775 INFO L131 PetriNetUnfolder]: For 570065/570065 co-relation queries the response was YES. [2023-08-30 12:55:45,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536977 conditions, 480642 events. 360669/480642 cut-off events. For 570065/570065 co-relation queries the response was YES. Maximal size of possible extension queue 18336. Compared 3882159 event pairs, 73672 based on Foata normal form. 5874/474119 useless extension candidates. Maximal degree in co-relation 1536956. Up to 306403 conditions per place. [2023-08-30 12:55:47,955 INFO L137 encePairwiseOnDemand]: 314/350 looper letters, 323 selfloop transitions, 123 changer transitions 0/451 dead transitions. [2023-08-30 12:55:47,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 451 transitions, 3758 flow [2023-08-30 12:55:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:55:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:55:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1340 transitions. [2023-08-30 12:55:47,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2023-08-30 12:55:47,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1340 transitions. [2023-08-30 12:55:47,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1340 transitions. [2023-08-30 12:55:47,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:55:47,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1340 transitions. [2023-08-30 12:55:47,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 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 12:55:47,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 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 12:55:47,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 350.0) internal successors, (2800), 8 states have internal predecessors, (2800), 0 states have call successors, (0), 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 12:55:47,966 INFO L175 Difference]: Start difference. First operand has 96 places, 183 transitions, 1299 flow. Second operand 7 states and 1340 transitions. [2023-08-30 12:55:47,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 451 transitions, 3758 flow [2023-08-30 12:55:59,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 451 transitions, 3758 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:55:59,532 INFO L231 Difference]: Finished difference. Result has 107 places, 273 transitions, 2719 flow [2023-08-30 12:55:59,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=350, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2719, PETRI_PLACES=107, PETRI_TRANSITIONS=273} [2023-08-30 12:55:59,533 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2023-08-30 12:55:59,533 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 273 transitions, 2719 flow [2023-08-30 12:55:59,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:55:59,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:55:59,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:55:59,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:55:59,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-30 12:55:59,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:55:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -344420965, now seen corresponding path program 1 times [2023-08-30 12:55:59,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:55:59,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301544141] [2023-08-30 12:55:59,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:55:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:55:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:55:59,581 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 12:55:59,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:55:59,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301544141] [2023-08-30 12:55:59,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301544141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:55:59,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:55:59,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:55:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086480126] [2023-08-30 12:55:59,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:55:59,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:55:59,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:55:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:55:59,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:55:59,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 350 [2023-08-30 12:55:59,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 273 transitions, 2719 flow. Second operand has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 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 12:55:59,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:55:59,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 350 [2023-08-30 12:55:59,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand