./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.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/goblint-regression/28-race_reach_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --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 14:02:10,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:02:10,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:02:10,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:02:10,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:02:10,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:02:10,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:02:10,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:02:10,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:02:10,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:02:10,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:02:10,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:02:10,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:02:10,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:02:10,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:02:10,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:02:10,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:02:10,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:02:10,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:02:10,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:02:10,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:02:10,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:02:10,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:02:10,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:02:10,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:02:10,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:02:10,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:02:10,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:02:10,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:02:10,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:02:10,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:02:10,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:02:10,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:02:10,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:02:10,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:02:10,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:02:10,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:02:10,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:02:10,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:02:10,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:02:10,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:02:10,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:02:10,810 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:02:10,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:02:10,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:02:10,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:02:10,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:02:10,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:02:10,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:02:10,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:02:10,813 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:02:10,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:02:10,814 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:02:10,815 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:02:10,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:02:10,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:02:10,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:02:10,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:02:10,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:02:10,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:02:10,816 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:02:10,816 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:02:10,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:02:10,816 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:02:10,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:02:10,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:02:10,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:02:10,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:02:10,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:02:10,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:02:10,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:02:10,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:02:10,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:02:10,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:02:10,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:02:10,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:02:10,819 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:02:10,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:02:10,819 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:02:10,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:02:11,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:02:11,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:02:11,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:02:11,127 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:02:11,127 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:02:11,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-30 14:02:12,234 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:02:12,530 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:02:12,538 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-30 14:02:12,558 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f5de33f/c04c760ecc9843f1b2868f4c8d6cbb93/FLAG3bc9faae8 [2023-08-30 14:02:12,573 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32f5de33f/c04c760ecc9843f1b2868f4c8d6cbb93 [2023-08-30 14:02:12,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:02:12,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:02:12,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:02:12,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:02:12,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:02:12,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:12,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb5de07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12, skipping insertion in model container [2023-08-30 14:02:12,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:12,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:02:12,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:02:12,834 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-08-30 14:02:12,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:02:12,872 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:02:12,928 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-08-30 14:02:12,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:02:12,982 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:02:12,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12 WrapperNode [2023-08-30 14:02:12,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:02:12,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:02:12,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:02:12,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:02:12,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,025 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-08-30 14:02:13,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:02:13,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:02:13,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:02:13,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:02:13,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:02:13,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:02:13,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:02:13,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:02:13,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (1/1) ... [2023-08-30 14:02:13,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:02:13,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:02:13,110 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 14:02:13,133 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 14:02:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:02:13,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:02:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:02:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:02:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:02:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:02:13,149 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:02:13,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:02:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:02:13,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:02:13,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:02:13,151 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 14:02:13,272 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:02:13,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:02:13,559 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:02:13,575 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:02:13,576 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-30 14:02:13,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:02:13 BoogieIcfgContainer [2023-08-30 14:02:13,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:02:13,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:02:13,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:02:13,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:02:13,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:02:12" (1/3) ... [2023-08-30 14:02:13,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4b6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:02:13, skipping insertion in model container [2023-08-30 14:02:13,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:02:12" (2/3) ... [2023-08-30 14:02:13,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4b6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:02:13, skipping insertion in model container [2023-08-30 14:02:13,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:02:13" (3/3) ... [2023-08-30 14:02:13,588 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-08-30 14:02:13,595 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:02:13,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:02:13,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 14:02:13,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:02:13,697 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:02:13,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 121 transitions, 250 flow [2023-08-30 14:02:13,827 INFO L130 PetriNetUnfolder]: 17/153 cut-off events. [2023-08-30 14:02:13,827 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:02:13,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 153 events. 17/153 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 336 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 14:02:13,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 121 transitions, 250 flow [2023-08-30 14:02:13,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 118 transitions, 244 flow [2023-08-30 14:02:13,842 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:02:13,864 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 118 transitions, 244 flow [2023-08-30 14:02:13,869 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 118 transitions, 244 flow [2023-08-30 14:02:13,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 118 transitions, 244 flow [2023-08-30 14:02:13,930 INFO L130 PetriNetUnfolder]: 16/150 cut-off events. [2023-08-30 14:02:13,933 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:02:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 150 events. 16/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-30 14:02:13,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-30 14:02:17,045 INFO L134 LiptonReduction]: Checked pairs total: 5060 [2023-08-30 14:02:17,046 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-30 14:02:17,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:02:17,063 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;@40a9a1a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:02:17,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 14:02:17,068 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-30 14:02:17,068 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:02:17,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:17,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:02:17,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:02:17,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash 14288252, now seen corresponding path program 1 times [2023-08-30 14:02:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:17,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361354696] [2023-08-30 14:02:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:17,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:17,380 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 14:02:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361354696] [2023-08-30 14:02:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361354696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:17,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:02:17,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:02:17,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125450686] [2023-08-30 14:02:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:17,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:02:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:02:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:02:17,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 224 [2023-08-30 14:02:17,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 14:02:17,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:17,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 224 [2023-08-30 14:02:17,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:17,521 INFO L130 PetriNetUnfolder]: 108/246 cut-off events. [2023-08-30 14:02:17,522 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:02:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 246 events. 108/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 958 event pairs, 88 based on Foata normal form. 23/202 useless extension candidates. Maximal degree in co-relation 475. Up to 229 conditions per place. [2023-08-30 14:02:17,524 INFO L137 encePairwiseOnDemand]: 209/224 looper letters, 37 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 14:02:17,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 168 flow [2023-08-30 14:02:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:02:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:02:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 14:02:17,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461309523809523 [2023-08-30 14:02:17,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 14:02:17,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 14:02:17,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:17,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 14:02:17,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 14:02:17,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 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 14:02:17,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 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 14:02:17,551 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 88 flow. Second operand 3 states and 367 transitions. [2023-08-30 14:02:17,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 168 flow [2023-08-30 14:02:17,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:02:17,555 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 72 flow [2023-08-30 14:02:17,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 14:02:17,559 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-30 14:02:17,559 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 72 flow [2023-08-30 14:02:17,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 14:02:17,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:17,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:02:17,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:02:17,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 14:02:17,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash 846136731, now seen corresponding path program 1 times [2023-08-30 14:02:17,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715593848] [2023-08-30 14:02:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:17,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:02:17,581 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:02:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:02:17,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:02:17,610 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:02:17,611 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-30 14:02:17,613 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 14:02:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 14:02:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 14:02:17,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 14:02:17,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 14:02:17,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-30 14:02:17,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-30 14:02:17,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-30 14:02:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 14:02:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 14:02:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 14:02:17,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 14:02:17,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:02:17,620 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:02:17,623 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:02:17,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:02:17,654 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:02:17,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 14:02:17,703 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-08-30 14:02:17,704 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:02:17,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-30 14:02:17,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 14:02:17,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-30 14:02:17,711 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:02:17,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-30 14:02:17,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-30 14:02:17,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-30 14:02:17,738 INFO L130 PetriNetUnfolder]: 31/259 cut-off events. [2023-08-30 14:02:17,739 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:02:17,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 259 events. 31/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 718 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-30 14:02:17,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 10008 [2023-08-30 14:02:20,662 INFO L134 LiptonReduction]: Checked pairs total: 24194 [2023-08-30 14:02:20,662 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-30 14:02:20,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:02:20,665 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;@40a9a1a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:02:20,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 14:02:20,667 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 14:02:20,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:02:20,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:20,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:02:20,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:02:20,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash 748851784, now seen corresponding path program 1 times [2023-08-30 14:02:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187537343] [2023-08-30 14:02:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:20,710 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 14:02:20,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:20,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187537343] [2023-08-30 14:02:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187537343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:20,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:02:20,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:02:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148100681] [2023-08-30 14:02:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:20,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:02:20,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:02:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:02:20,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-30 14:02:20,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 14:02:20,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:20,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-30 14:02:20,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:21,365 INFO L130 PetriNetUnfolder]: 4812/7868 cut-off events. [2023-08-30 14:02:21,366 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-30 14:02:21,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15604 conditions, 7868 events. 4812/7868 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51626 event pairs, 4590 based on Foata normal form. 978/6192 useless extension candidates. Maximal degree in co-relation 10467. Up to 7633 conditions per place. [2023-08-30 14:02:21,410 INFO L137 encePairwiseOnDemand]: 263/283 looper letters, 59 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 14:02:21,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 276 flow [2023-08-30 14:02:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:02:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:02:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2023-08-30 14:02:21,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700824499411072 [2023-08-30 14:02:21,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2023-08-30 14:02:21,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2023-08-30 14:02:21,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:21,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2023-08-30 14:02:21,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:21,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 14:02:21,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 14:02:21,423 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 154 flow. Second operand 3 states and 484 transitions. [2023-08-30 14:02:21,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 276 flow [2023-08-30 14:02:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:02:21,429 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 140 flow [2023-08-30 14:02:21,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 14:02:21,430 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 14:02:21,431 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 140 flow [2023-08-30 14:02:21,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 14:02:21,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:21,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:02:21,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:02:21,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:02:21,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1901252812, now seen corresponding path program 1 times [2023-08-30 14:02:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617993584] [2023-08-30 14:02:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:21,476 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 14:02:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617993584] [2023-08-30 14:02:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617993584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:21,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:02:21,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:02:21,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99464892] [2023-08-30 14:02:21,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:21,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:02:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:21,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:02:21,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:02:21,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-30 14:02:21,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:21,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:21,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-30 14:02:21,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:22,095 INFO L130 PetriNetUnfolder]: 4323/7119 cut-off events. [2023-08-30 14:02:22,099 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2023-08-30 14:02:22,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 7119 events. 4323/7119 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45251 event pairs, 1698 based on Foata normal form. 0/5078 useless extension candidates. Maximal degree in co-relation 14763. Up to 6515 conditions per place. [2023-08-30 14:02:22,145 INFO L137 encePairwiseOnDemand]: 275/283 looper letters, 64 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-30 14:02:22,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 330 flow [2023-08-30 14:02:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:02:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:02:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-08-30 14:02:22,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488810365135454 [2023-08-30 14:02:22,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-08-30 14:02:22,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-08-30 14:02:22,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:22,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-08-30 14:02:22,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 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 14:02:22,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 14:02:22,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 14:02:22,156 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 140 flow. Second operand 3 states and 466 transitions. [2023-08-30 14:02:22,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 330 flow [2023-08-30 14:02:22,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:02:22,160 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 165 flow [2023-08-30 14:02:22,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-30 14:02:22,161 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-30 14:02:22,161 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 165 flow [2023-08-30 14:02:22,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:22,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:22,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:02:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:02:22,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:02:22,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash 473807225, now seen corresponding path program 1 times [2023-08-30 14:02:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:22,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774403459] [2023-08-30 14:02:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:22,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:02:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:22,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774403459] [2023-08-30 14:02:22,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774403459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:22,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:02:22,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:02:22,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492452906] [2023-08-30 14:02:22,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:22,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:02:22,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:22,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:02:22,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:02:22,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 283 [2023-08-30 14:02:22,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 14:02:22,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:22,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 283 [2023-08-30 14:02:22,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:22,719 INFO L130 PetriNetUnfolder]: 3995/6482 cut-off events. [2023-08-30 14:02:22,719 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-30 14:02:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14517 conditions, 6482 events. 3995/6482 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 43099 event pairs, 805 based on Foata normal form. 0/5104 useless extension candidates. Maximal degree in co-relation 10542. Up to 5009 conditions per place. [2023-08-30 14:02:22,752 INFO L137 encePairwiseOnDemand]: 279/283 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-30 14:02:22,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 391 flow [2023-08-30 14:02:22,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:02:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:02:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-30 14:02:22,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552414605418139 [2023-08-30 14:02:22,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-30 14:02:22,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-30 14:02:22,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:22,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-30 14:02:22,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 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 14:02:22,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 14:02:22,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 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 14:02:22,759 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 165 flow. Second operand 3 states and 469 transitions. [2023-08-30 14:02:22,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 391 flow [2023-08-30 14:02:22,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:02:22,765 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 174 flow [2023-08-30 14:02:22,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 14:02:22,767 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 14:02:22,768 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 174 flow [2023-08-30 14:02:22,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 14:02:22,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:22,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:02:22,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:02:22,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:02:22,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash 473807201, now seen corresponding path program 1 times [2023-08-30 14:02:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:22,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82107169] [2023-08-30 14:02:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:02:22,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82107169] [2023-08-30 14:02:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82107169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:02:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645459539] [2023-08-30 14:02:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:22,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:02:22,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:02:22,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:02:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:02:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:22,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:02:22,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:02:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:02:22,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:02:22,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645459539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:02:22,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:02:22,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936046908] [2023-08-30 14:02:22,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:22,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:02:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:22,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:02:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:02:22,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 283 [2023-08-30 14:02:22,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 14:02:22,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:22,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 283 [2023-08-30 14:02:22,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:23,557 INFO L130 PetriNetUnfolder]: 3667/6151 cut-off events. [2023-08-30 14:02:23,558 INFO L131 PetriNetUnfolder]: For 2106/2106 co-relation queries the response was YES. [2023-08-30 14:02:23,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13948 conditions, 6151 events. 3667/6151 cut-off events. For 2106/2106 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 38420 event pairs, 1892 based on Foata normal form. 178/5194 useless extension candidates. Maximal degree in co-relation 2617. Up to 5877 conditions per place. [2023-08-30 14:02:23,590 INFO L137 encePairwiseOnDemand]: 280/283 looper letters, 57 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-30 14:02:23,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 312 flow [2023-08-30 14:02:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:02:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:02:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-08-30 14:02:23,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212014134275619 [2023-08-30 14:02:23,593 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-08-30 14:02:23,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-08-30 14:02:23,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:23,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-08-30 14:02:23,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 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 14:02:23,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 14:02:23,598 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 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 14:02:23,598 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 174 flow. Second operand 4 states and 590 transitions. [2023-08-30 14:02:23,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 312 flow [2023-08-30 14:02:23,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:02:23,601 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 170 flow [2023-08-30 14:02:23,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-08-30 14:02:23,602 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-30 14:02:23,602 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 170 flow [2023-08-30 14:02:23,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 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 14:02:23,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:23,603 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:02:23,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:02:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 14:02:23,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-30 14:02:23,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash 62243337, now seen corresponding path program 1 times [2023-08-30 14:02:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:23,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454743026] [2023-08-30 14:02:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:02:23,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:02:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:02:23,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:02:23,845 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:02:23,846 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-30 14:02:23,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-30 14:02:23,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-08-30 14:02:23,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-30 14:02:23,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-30 14:02:23,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-30 14:02:23,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-30 14:02:23,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-30 14:02:23,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-30 14:02:23,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-30 14:02:23,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-30 14:02:23,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-30 14:02:23,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-30 14:02:23,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-30 14:02:23,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-30 14:02:23,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-30 14:02:23,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-30 14:02:23,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:02:23,850 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:02:23,851 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:02:23,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:02:23,887 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:02:23,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-08-30 14:02:23,959 INFO L130 PetriNetUnfolder]: 50/404 cut-off events. [2023-08-30 14:02:23,959 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:02:23,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 404 events. 50/404 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1293 event pairs, 1 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-30 14:02:23,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 197 transitions, 424 flow [2023-08-30 14:02:23,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 197 transitions, 424 flow [2023-08-30 14:02:23,966 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:02:23,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 197 transitions, 424 flow [2023-08-30 14:02:23,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 197 transitions, 424 flow [2023-08-30 14:02:23,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 197 transitions, 424 flow [2023-08-30 14:02:24,013 INFO L130 PetriNetUnfolder]: 50/404 cut-off events. [2023-08-30 14:02:24,013 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:02:24,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 404 events. 50/404 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1293 event pairs, 1 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 267. Up to 16 conditions per place. [2023-08-30 14:02:24,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 19224 [2023-08-30 14:02:27,299 INFO L134 LiptonReduction]: Checked pairs total: 56486 [2023-08-30 14:02:27,300 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-30 14:02:27,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:02:27,302 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;@40a9a1a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:02:27,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:02:27,305 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 14:02:27,305 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:02:27,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:27,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:02:27,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:02:27,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1115098248, now seen corresponding path program 1 times [2023-08-30 14:02:27,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:27,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310868146] [2023-08-30 14:02:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:27,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:27,360 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 14:02:27,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:27,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310868146] [2023-08-30 14:02:27,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310868146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:27,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:02:27,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:02:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135993668] [2023-08-30 14:02:27,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:02:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:02:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:02:27,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 346 [2023-08-30 14:02:27,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:27,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:27,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 346 [2023-08-30 14:02:27,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:35,942 INFO L130 PetriNetUnfolder]: 107413/153807 cut-off events. [2023-08-30 14:02:35,942 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2023-08-30 14:02:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304386 conditions, 153807 events. 107413/153807 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3963. Compared 1154681 event pairs, 69876 based on Foata normal form. 16992/120179 useless extension candidates. Maximal degree in co-relation 26679. Up to 148930 conditions per place. [2023-08-30 14:02:37,046 INFO L137 encePairwiseOnDemand]: 320/346 looper letters, 74 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 14:02:37,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 352 flow [2023-08-30 14:02:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:02:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:02:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-08-30 14:02:37,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5732177263969171 [2023-08-30 14:02:37,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-08-30 14:02:37,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-08-30 14:02:37,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:37,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-08-30 14:02:37,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 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 14:02:37,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 14:02:37,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 14:02:37,054 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 595 transitions. [2023-08-30 14:02:37,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 352 flow [2023-08-30 14:02:37,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:02:37,061 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 186 flow [2023-08-30 14:02:37,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-30 14:02:37,062 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-30 14:02:37,062 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 186 flow [2023-08-30 14:02:37,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:37,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:37,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:02:37,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:02:37,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:02:37,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2123897344, now seen corresponding path program 1 times [2023-08-30 14:02:37,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986946850] [2023-08-30 14:02:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:37,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:37,118 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 14:02:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:37,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986946850] [2023-08-30 14:02:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986946850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:37,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:02:37,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:02:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817010225] [2023-08-30 14:02:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:37,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:02:37,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:02:37,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:02:37,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 346 [2023-08-30 14:02:37,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 14:02:37,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:37,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 346 [2023-08-30 14:02:37,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:44,977 INFO L130 PetriNetUnfolder]: 108767/155419 cut-off events. [2023-08-30 14:02:44,977 INFO L131 PetriNetUnfolder]: For 8555/8555 co-relation queries the response was YES. [2023-08-30 14:02:45,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319873 conditions, 155419 events. 108767/155419 cut-off events. For 8555/8555 co-relation queries the response was YES. Maximal size of possible extension queue 4153. Compared 1160825 event pairs, 51493 based on Foata normal form. 0/109435 useless extension candidates. Maximal degree in co-relation 319779. Up to 147969 conditions per place. [2023-08-30 14:02:45,778 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 85 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-08-30 14:02:45,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 439 flow [2023-08-30 14:02:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:02:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:02:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 14:02:45,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529865125240848 [2023-08-30 14:02:45,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 14:02:45,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 14:02:45,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:45,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 14:02:45,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 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 14:02:45,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 14:02:45,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 14:02:45,787 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 186 flow. Second operand 3 states and 574 transitions. [2023-08-30 14:02:45,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 439 flow [2023-08-30 14:02:45,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:02:45,803 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 222 flow [2023-08-30 14:02:45,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-30 14:02:45,804 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-30 14:02:45,804 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 222 flow [2023-08-30 14:02:45,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 14:02:45,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:45,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:02:45,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:02:45,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:02:45,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash -470081558, now seen corresponding path program 1 times [2023-08-30 14:02:45,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:45,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294294396] [2023-08-30 14:02:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:45,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:02:45,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:45,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294294396] [2023-08-30 14:02:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294294396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:02:45,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897353520] [2023-08-30 14:02:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:45,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:02:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:02:45,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:02:45,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:02:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:45,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:02:45,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:02:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:02:45,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:02:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897353520] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:45,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:02:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:02:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663671800] [2023-08-30 14:02:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:45,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:02:45,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:45,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:02:45,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:02:45,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 346 [2023-08-30 14:02:45,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:45,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:45,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 346 [2023-08-30 14:02:45,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:02:53,811 INFO L130 PetriNetUnfolder]: 98427/142067 cut-off events. [2023-08-30 14:02:53,811 INFO L131 PetriNetUnfolder]: For 18615/18615 co-relation queries the response was YES. [2023-08-30 14:02:54,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311883 conditions, 142067 events. 98427/142067 cut-off events. For 18615/18615 co-relation queries the response was YES. Maximal size of possible extension queue 3721. Compared 1066209 event pairs, 68717 based on Foata normal form. 0/111104 useless extension candidates. Maximal degree in co-relation 200273. Up to 136998 conditions per place. [2023-08-30 14:02:54,463 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 73 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-30 14:02:54,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 392 flow [2023-08-30 14:02:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:02:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:02:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 726 transitions. [2023-08-30 14:02:54,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245664739884393 [2023-08-30 14:02:54,466 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 726 transitions. [2023-08-30 14:02:54,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 726 transitions. [2023-08-30 14:02:54,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:02:54,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 726 transitions. [2023-08-30 14:02:54,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 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 14:02:54,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 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 14:02:54,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 346.0) internal successors, (1730), 5 states have internal predecessors, (1730), 0 states have call successors, (0), 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 14:02:54,471 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 222 flow. Second operand 4 states and 726 transitions. [2023-08-30 14:02:54,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 392 flow [2023-08-30 14:02:54,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:02:54,482 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 218 flow [2023-08-30 14:02:54,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2023-08-30 14:02:54,485 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-30 14:02:54,485 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 218 flow [2023-08-30 14:02:54,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:54,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:02:54,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:02:54,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:02:54,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 14:02:54,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:02:54,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:02:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash -470081525, now seen corresponding path program 1 times [2023-08-30 14:02:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:02:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942266097] [2023-08-30 14:02:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:02:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:02:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:02:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:02:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:02:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942266097] [2023-08-30 14:02:54,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942266097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:02:54,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:02:54,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:02:54,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756982973] [2023-08-30 14:02:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:02:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:02:54,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:02:54,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:02:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:02:54,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 346 [2023-08-30 14:02:54,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:02:54,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:02:54,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 346 [2023-08-30 14:02:54,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:03:01,008 INFO L130 PetriNetUnfolder]: 90371/127762 cut-off events. [2023-08-30 14:03:01,008 INFO L131 PetriNetUnfolder]: For 14317/14317 co-relation queries the response was YES. [2023-08-30 14:03:01,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281753 conditions, 127762 events. 90371/127762 cut-off events. For 14317/14317 co-relation queries the response was YES. Maximal size of possible extension queue 3536. Compared 960139 event pairs, 12937 based on Foata normal form. 0/101611 useless extension candidates. Maximal degree in co-relation 281256. Up to 107210 conditions per place. [2023-08-30 14:03:01,768 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 100 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-08-30 14:03:01,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 526 flow [2023-08-30 14:03:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:03:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:03:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-08-30 14:03:01,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645472061657033 [2023-08-30 14:03:01,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-08-30 14:03:01,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-08-30 14:03:01,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:03:01,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-08-30 14:03:01,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 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 14:03:01,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 14:03:01,773 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 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 14:03:01,773 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 218 flow. Second operand 3 states and 586 transitions. [2023-08-30 14:03:01,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 526 flow [2023-08-30 14:03:01,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 114 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:03:01,779 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 227 flow [2023-08-30 14:03:01,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2023-08-30 14:03:01,780 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-30 14:03:01,780 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 227 flow [2023-08-30 14:03:01,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:03:01,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:03:01,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:03:01,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:03:01,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:03:01,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:03:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash 549645250, now seen corresponding path program 1 times [2023-08-30 14:03:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:03:01,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23946346] [2023-08-30 14:03:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:03:01,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:03:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:03:01,827 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 14:03:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:03:01,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23946346] [2023-08-30 14:03:01,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23946346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:03:01,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:03:01,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:03:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433630319] [2023-08-30 14:03:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:03:01,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:03:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:03:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:03:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:03:01,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 14:03:01,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 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 14:03:01,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:03:01,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 14:03:01,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:03:11,610 INFO L130 PetriNetUnfolder]: 130682/189415 cut-off events. [2023-08-30 14:03:11,610 INFO L131 PetriNetUnfolder]: For 57153/57153 co-relation queries the response was YES. [2023-08-30 14:03:12,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427543 conditions, 189415 events. 130682/189415 cut-off events. For 57153/57153 co-relation queries the response was YES. Maximal size of possible extension queue 5380. Compared 1495394 event pairs, 28317 based on Foata normal form. 0/157097 useless extension candidates. Maximal degree in co-relation 427437. Up to 106388 conditions per place. [2023-08-30 14:03:12,768 INFO L137 encePairwiseOnDemand]: 325/346 looper letters, 215 selfloop transitions, 30 changer transitions 0/253 dead transitions. [2023-08-30 14:03:12,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 253 transitions, 1273 flow [2023-08-30 14:03:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:03:12,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:03:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1341 transitions. [2023-08-30 14:03:12,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536746490503716 [2023-08-30 14:03:12,771 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1341 transitions. [2023-08-30 14:03:12,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1341 transitions. [2023-08-30 14:03:12,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:03:12,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1341 transitions. [2023-08-30 14:03:12,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 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 14:03:12,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 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 14:03:12,778 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 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 14:03:12,779 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 227 flow. Second operand 7 states and 1341 transitions. [2023-08-30 14:03:12,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 253 transitions, 1273 flow [2023-08-30 14:03:12,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 253 transitions, 1255 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:03:12,796 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 485 flow [2023-08-30 14:03:12,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2023-08-30 14:03:12,796 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-08-30 14:03:12,797 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 485 flow [2023-08-30 14:03:12,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 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 14:03:12,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:03:12,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:03:12,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:03:12,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:03:12,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:03:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash 549645226, now seen corresponding path program 1 times [2023-08-30 14:03:12,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:03:12,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740825819] [2023-08-30 14:03:12,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:03:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:03:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:03:12,840 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 14:03:12,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:03:12,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740825819] [2023-08-30 14:03:12,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740825819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:03:12,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:03:12,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:03:12,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003416883] [2023-08-30 14:03:12,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:03:12,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:03:12,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:03:12,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:03:12,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:03:12,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2023-08-30 14:03:12,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 485 flow. Second operand has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 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 14:03:12,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:03:12,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2023-08-30 14:03:12,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:03:25,605 INFO L130 PetriNetUnfolder]: 135779/201202 cut-off events. [2023-08-30 14:03:25,605 INFO L131 PetriNetUnfolder]: For 195149/195996 co-relation queries the response was YES. [2023-08-30 14:03:26,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563736 conditions, 201202 events. 135779/201202 cut-off events. For 195149/195996 co-relation queries the response was YES. Maximal size of possible extension queue 6000. Compared 1671017 event pairs, 26830 based on Foata normal form. 7907/200811 useless extension candidates. Maximal degree in co-relation 563624. Up to 122085 conditions per place. [2023-08-30 14:03:26,838 INFO L137 encePairwiseOnDemand]: 325/346 looper letters, 235 selfloop transitions, 42 changer transitions 0/285 dead transitions. [2023-08-30 14:03:26,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 285 transitions, 1777 flow [2023-08-30 14:03:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:03:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:03:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1341 transitions. [2023-08-30 14:03:26,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536746490503716 [2023-08-30 14:03:26,842 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1341 transitions. [2023-08-30 14:03:26,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1341 transitions. [2023-08-30 14:03:26,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:03:26,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1341 transitions. [2023-08-30 14:03:26,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 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 14:03:26,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 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 14:03:26,849 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 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 14:03:26,849 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 485 flow. Second operand 7 states and 1341 transitions. [2023-08-30 14:03:26,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 285 transitions, 1777 flow [2023-08-30 14:03:27,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 285 transitions, 1771 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:03:27,306 INFO L231 Difference]: Finished difference. Result has 99 places, 132 transitions, 961 flow [2023-08-30 14:03:27,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=961, PETRI_PLACES=99, PETRI_TRANSITIONS=132} [2023-08-30 14:03:27,306 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2023-08-30 14:03:27,307 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 132 transitions, 961 flow [2023-08-30 14:03:27,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 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 14:03:27,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:03:27,307 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:03:27,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:03:27,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:03:27,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:03:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1764846423, now seen corresponding path program 1 times [2023-08-30 14:03:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:03:27,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991823407] [2023-08-30 14:03:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:03:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:03:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:03:27,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:03:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:03:27,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:03:27,344 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:03:27,344 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:03:27,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:03:27,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:03:27,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:03:27,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:03:27,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:03:27,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:03:27,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:03:27,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:03:27,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:03:27,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:03:27,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:03:27,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:03:27,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:03:27,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:03:27,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:03:27,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:03:27,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:03:27,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:03:27,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:03:27,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:03:27,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:03:27,347 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:03:27,348 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:03:27,348 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:03:27,368 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:03:27,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 235 transitions, 514 flow [2023-08-30 14:03:27,431 INFO L130 PetriNetUnfolder]: 81/629 cut-off events. [2023-08-30 14:03:27,432 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:03:27,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 629 events. 81/629 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2369 event pairs, 6 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 424. Up to 32 conditions per place. [2023-08-30 14:03:27,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 235 transitions, 514 flow [2023-08-30 14:03:27,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 235 transitions, 514 flow [2023-08-30 14:03:27,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:03:27,444 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 235 transitions, 514 flow [2023-08-30 14:03:27,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 235 transitions, 514 flow [2023-08-30 14:03:27,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 235 transitions, 514 flow [2023-08-30 14:03:27,678 INFO L130 PetriNetUnfolder]: 81/629 cut-off events. [2023-08-30 14:03:27,678 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 14:03:27,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 629 events. 81/629 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2369 event pairs, 6 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 424. Up to 32 conditions per place. [2023-08-30 14:03:27,704 INFO L119 LiptonReduction]: Number of co-enabled transitions 31248 [2023-08-30 14:03:30,799 INFO L134 LiptonReduction]: Checked pairs total: 85938 [2023-08-30 14:03:30,800 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 14:03:30,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:03:30,802 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;@40a9a1a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:03:30,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 14:03:30,803 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 14:03:30,803 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:03:30,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:03:30,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:03:30,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 14:03:30,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:03:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1539589081, now seen corresponding path program 1 times [2023-08-30 14:03:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:03:30,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976250613] [2023-08-30 14:03:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:03:30,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:03:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:03:30,833 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 14:03:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:03:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976250613] [2023-08-30 14:03:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976250613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:03:30,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:03:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:03:30,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220516571] [2023-08-30 14:03:30,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:03:30,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:03:30,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:03:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:03:30,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:03:30,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 407 [2023-08-30 14:03:30,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 14:03:30,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:03:30,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 407 [2023-08-30 14:03:30,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand