./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 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 ../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:09:10,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:09:10,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:09:10,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:09:10,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:09:10,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:09:10,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:09:10,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:09:10,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:09:10,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:09:10,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:09:10,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:09:10,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:09:10,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:09:10,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:09:10,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:09:10,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:09:10,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:09:10,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:09:10,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:09:10,767 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:09:10,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:09:10,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:09:10,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:09:10,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:09:10,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:09:10,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:09:10,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:09:10,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:09:10,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:09:10,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:09:10,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:09:10,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:09:10,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:09:10,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:09:10,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:09:10,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:09:10,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:09:10,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:09:10,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:09:10,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:09:10,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:09:10,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-14 14:09:10,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:09:10,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:09:10,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:09:10,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:09:10,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 14:09:10,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 14:09:10,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:09:10,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:09:10,797 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:09:10,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:09:10,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 14:09:10,798 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:09:10,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:09:10,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 14:09:10,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:09:10,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 14:09:10,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 14:09:10,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 14:09:10,799 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 14:09:10,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 14:09:10,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:09:10,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:09:10,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 14:09:10,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:09:10,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:09:10,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 14:09:10,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-07-14 14:09:11,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:09:11,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:09:11,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:09:11,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:09:11,042 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:09:11,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-07-14 14:09:11,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0717d7c8b/ce25a4a7cfa64b38b4709829dbafe422/FLAG1ec53bb35 [2022-07-14 14:09:11,589 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:09:11,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-07-14 14:09:11,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0717d7c8b/ce25a4a7cfa64b38b4709829dbafe422/FLAG1ec53bb35 [2022-07-14 14:09:12,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0717d7c8b/ce25a4a7cfa64b38b4709829dbafe422 [2022-07-14 14:09:12,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:09:12,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:09:12,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:09:12,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:09:12,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:09:12,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50bce48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12, skipping insertion in model container [2022-07-14 14:09:12,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:09:12,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:09:12,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-07-14 14:09:12,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:09:12,536 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:09:12,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-07-14 14:09:12,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:09:12,642 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:09:12,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12 WrapperNode [2022-07-14 14:09:12,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:09:12,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:09:12,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:09:12,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:09:12,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,702 INFO L137 Inliner]: procedures = 270, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-07-14 14:09:12,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:09:12,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:09:12,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:09:12,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:09:12,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:09:12,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:09:12,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:09:12,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:09:12,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (1/1) ... [2022-07-14 14:09:12,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 14:09:12,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:09:12,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 14:09:12,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 14:09:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 14:09:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 14:09:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 14:09:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 14:09:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-14 14:09:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 14:09:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-14 14:09:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-14 14:09:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 14:09:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:09:12,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:09:12,810 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-14 14:09:12,902 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:09:12,903 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:09:13,094 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:09:13,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:09:13,100 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-14 14:09:13,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:09:13 BoogieIcfgContainer [2022-07-14 14:09:13,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:09:13,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 14:09:13,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 14:09:13,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 14:09:13,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 02:09:12" (1/3) ... [2022-07-14 14:09:13,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b02719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:09:13, skipping insertion in model container [2022-07-14 14:09:13,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:09:12" (2/3) ... [2022-07-14 14:09:13,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b02719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:09:13, skipping insertion in model container [2022-07-14 14:09:13,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:09:13" (3/3) ... [2022-07-14 14:09:13,108 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-07-14 14:09:13,112 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-14 14:09:13,119 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 14:09:13,119 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-07-14 14:09:13,120 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-14 14:09:13,167 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-14 14:09:13,192 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:09:13,200 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 144 transitions, 296 flow [2022-07-14 14:09:13,202 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 144 transitions, 296 flow [2022-07-14 14:09:13,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 144 transitions, 296 flow [2022-07-14 14:09:13,291 INFO L129 PetriNetUnfolder]: 23/188 cut-off events. [2022-07-14 14:09:13,292 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-14 14:09:13,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 188 events. 23/188 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 425 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-07-14 14:09:13,301 INFO L116 LiptonReduction]: Number of co-enabled transitions 3888 [2022-07-14 14:09:16,793 INFO L131 LiptonReduction]: Checked pairs total: 5665 [2022-07-14 14:09:16,794 INFO L133 LiptonReduction]: Total number of compositions: 144 [2022-07-14 14:09:16,799 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 40 transitions, 88 flow [2022-07-14 14:09:16,818 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:16,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:09:16,834 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b70aa47, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fe689ec [2022-07-14 14:09:16,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-07-14 14:09:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 14:09:16,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:16,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 14:09:16,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-14 14:09:16,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash 17292313, now seen corresponding path program 1 times [2022-07-14 14:09:16,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:16,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014361710] [2022-07-14 14:09:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:16,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:17,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014361710] [2022-07-14 14:09:17,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014361710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:17,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:17,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775087011] [2022-07-14 14:09:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:17,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:17,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:17,032 INFO L87 Difference]: Start difference. First operand has 194 states, 167 states have (on average 2.8323353293413174) internal successors, (473), 193 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:17,101 INFO L93 Difference]: Finished difference Result 162 states and 305 transitions. [2022-07-14 14:09:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:17,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-14 14:09:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:17,109 INFO L225 Difference]: With dead ends: 162 [2022-07-14 14:09:17,110 INFO L226 Difference]: Without dead ends: 156 [2022-07-14 14:09:17,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:17,113 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:17,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 6 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-14 14:09:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-07-14 14:09:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 141 states have (on average 2.0921985815602837) internal successors, (295), 155 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 295 transitions. [2022-07-14 14:09:17,144 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 295 transitions. Word has length 4 [2022-07-14 14:09:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:17,144 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 295 transitions. [2022-07-14 14:09:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 295 transitions. [2022-07-14 14:09:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:09:17,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:17,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 14:09:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 14:09:17,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-14 14:09:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash -561979480, now seen corresponding path program 1 times [2022-07-14 14:09:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:17,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325028374] [2022-07-14 14:09:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:17,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:17,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325028374] [2022-07-14 14:09:17,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325028374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:17,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:17,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622506492] [2022-07-14 14:09:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:17,189 INFO L87 Difference]: Start difference. First operand 156 states and 295 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:17,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:17,249 INFO L93 Difference]: Finished difference Result 173 states and 303 transitions. [2022-07-14 14:09:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:17,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-14 14:09:17,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:17,252 INFO L225 Difference]: With dead ends: 173 [2022-07-14 14:09:17,252 INFO L226 Difference]: Without dead ends: 171 [2022-07-14 14:09:17,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:17,253 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:17,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 5 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-14 14:09:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2022-07-14 14:09:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 133 states have (on average 1.9924812030075187) internal successors, (265), 141 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 265 transitions. [2022-07-14 14:09:17,264 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 265 transitions. Word has length 6 [2022-07-14 14:09:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:17,265 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 265 transitions. [2022-07-14 14:09:17,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 265 transitions. [2022-07-14 14:09:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:09:17,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:17,266 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-07-14 14:09:17,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 14:09:17,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-07-14 14:09:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash -561930025, now seen corresponding path program 1 times [2022-07-14 14:09:17,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:17,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660211632] [2022-07-14 14:09:17,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:17,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:17,290 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:09:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:17,316 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:09:17,317 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:09:17,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-07-14 14:09:17,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-07-14 14:09:17,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-07-14 14:09:17,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-07-14 14:09:17,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-07-14 14:09:17,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-07-14 14:09:17,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 14:09:17,322 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-14 14:09:17,336 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:09:17,336 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-14 14:09:17,348 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-14 14:09:17,350 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:09:17,351 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 182 transitions, 382 flow [2022-07-14 14:09:17,359 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 182 transitions, 382 flow [2022-07-14 14:09:17,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 165 places, 182 transitions, 382 flow [2022-07-14 14:09:17,405 INFO L129 PetriNetUnfolder]: 40/307 cut-off events. [2022-07-14 14:09:17,405 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-14 14:09:17,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 40/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 190. Up to 9 conditions per place. [2022-07-14 14:09:17,415 INFO L116 LiptonReduction]: Number of co-enabled transitions 11736 [2022-07-14 14:09:20,997 INFO L131 LiptonReduction]: Checked pairs total: 24916 [2022-07-14 14:09:20,997 INFO L133 LiptonReduction]: Total number of compositions: 170 [2022-07-14 14:09:20,998 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 67 transitions, 152 flow [2022-07-14 14:09:21,124 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:09:21,134 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b70aa47, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fe689ec [2022-07-14 14:09:21,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-07-14 14:09:21,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:09:21,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:21,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 14:09:21,150 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)] === [2022-07-14 14:09:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:21,151 INFO L85 PathProgramCache]: Analyzing trace with hash 909128544, now seen corresponding path program 1 times [2022-07-14 14:09:21,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:21,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416099669] [2022-07-14 14:09:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:21,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:21,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:21,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416099669] [2022-07-14 14:09:21,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416099669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:21,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:21,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:21,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127184173] [2022-07-14 14:09:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:21,214 INFO L87 Difference]: Start difference. First operand has 3981 states, 3814 states have (on average 3.7949659150498163) internal successors, (14474), 3980 states have internal predecessors, (14474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:21,309 INFO L93 Difference]: Finished difference Result 3945 states and 11028 transitions. [2022-07-14 14:09:21,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:21,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 14:09:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:21,332 INFO L225 Difference]: With dead ends: 3945 [2022-07-14 14:09:21,333 INFO L226 Difference]: Without dead ends: 3919 [2022-07-14 14:09:21,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:21,338 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:21,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2022-07-14 14:09:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3919. [2022-07-14 14:09:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3766 states have (on average 2.9107806691449816) internal successors, (10962), 3918 states have internal predecessors, (10962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 10962 transitions. [2022-07-14 14:09:21,463 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 10962 transitions. Word has length 5 [2022-07-14 14:09:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:21,463 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 10962 transitions. [2022-07-14 14:09:21,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 10962 transitions. [2022-07-14 14:09:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-14 14:09:21,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:21,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-14 14:09:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 14:09:21,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:09:21,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1881558770, now seen corresponding path program 1 times [2022-07-14 14:09:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:21,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518075038] [2022-07-14 14:09:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:21,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518075038] [2022-07-14 14:09:21,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518075038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:21,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:21,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827313885] [2022-07-14 14:09:21,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:21,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:21,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:21,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:21,494 INFO L87 Difference]: Start difference. First operand 3919 states and 10962 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:21,656 INFO L93 Difference]: Finished difference Result 4824 states and 12505 transitions. [2022-07-14 14:09:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:21,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-14 14:09:21,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:21,677 INFO L225 Difference]: With dead ends: 4824 [2022-07-14 14:09:21,678 INFO L226 Difference]: Without dead ends: 4800 [2022-07-14 14:09:21,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:21,679 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:21,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 19 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2022-07-14 14:09:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 4322. [2022-07-14 14:09:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4189 states have (on average 2.789209835282884) internal successors, (11684), 4321 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 11684 transitions. [2022-07-14 14:09:21,789 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 11684 transitions. Word has length 6 [2022-07-14 14:09:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:21,789 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 11684 transitions. [2022-07-14 14:09:21,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 11684 transitions. [2022-07-14 14:09:21,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:09:21,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:21,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:09:21,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 14:09:21,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:09:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1986688118, now seen corresponding path program 1 times [2022-07-14 14:09:21,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:21,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519966390] [2022-07-14 14:09:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:09:21,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519966390] [2022-07-14 14:09:21,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519966390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:21,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:21,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:09:21,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839491492] [2022-07-14 14:09:21,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:21,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:21,811 INFO L87 Difference]: Start difference. First operand 4322 states and 11684 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:21,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:21,929 INFO L93 Difference]: Finished difference Result 4090 states and 11020 transitions. [2022-07-14 14:09:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:21,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:09:21,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:21,947 INFO L225 Difference]: With dead ends: 4090 [2022-07-14 14:09:21,947 INFO L226 Difference]: Without dead ends: 4090 [2022-07-14 14:09:21,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:21,948 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:21,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 14 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2022-07-14 14:09:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4090. [2022-07-14 14:09:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 3978 states have (on average 2.7702362996480643) internal successors, (11020), 4089 states have internal predecessors, (11020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 11020 transitions. [2022-07-14 14:09:22,035 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 11020 transitions. Word has length 9 [2022-07-14 14:09:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:22,036 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 11020 transitions. [2022-07-14 14:09:22,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 11020 transitions. [2022-07-14 14:09:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:09:22,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:22,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:09:22,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 14:09:22,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:09:22,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:22,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1986688167, now seen corresponding path program 1 times [2022-07-14 14:09:22,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:22,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745821612] [2022-07-14 14:09:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:22,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:22,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745821612] [2022-07-14 14:09:22,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745821612] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:09:22,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600879575] [2022-07-14 14:09:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:22,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:09:22,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:09:22,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:09:22,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 14:09:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:22,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:09:22,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:09:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:22,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 14:09:22,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600879575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:22,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 14:09:22,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-07-14 14:09:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558587290] [2022-07-14 14:09:22,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:22,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 14:09:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:09:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:22,161 INFO L87 Difference]: Start difference. First operand 4090 states and 11020 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:22,228 INFO L93 Difference]: Finished difference Result 3858 states and 10356 transitions. [2022-07-14 14:09:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:09:22,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:09:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:22,265 INFO L225 Difference]: With dead ends: 3858 [2022-07-14 14:09:22,266 INFO L226 Difference]: Without dead ends: 3858 [2022-07-14 14:09:22,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:22,267 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 91 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:22,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 16 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:22,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2022-07-14 14:09:22,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3858. [2022-07-14 14:09:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3767 states have (on average 2.7491372444916378) internal successors, (10356), 3857 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 10356 transitions. [2022-07-14 14:09:22,347 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 10356 transitions. Word has length 9 [2022-07-14 14:09:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:22,348 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 10356 transitions. [2022-07-14 14:09:22,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 10356 transitions. [2022-07-14 14:09:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:22,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:22,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:22,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 14:09:22,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:09:22,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:09:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1585991819, now seen corresponding path program 1 times [2022-07-14 14:09:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:22,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007165175] [2022-07-14 14:09:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:22,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:22,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007165175] [2022-07-14 14:09:22,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007165175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:22,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:22,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668000494] [2022-07-14 14:09:22,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:22,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:22,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:22,592 INFO L87 Difference]: Start difference. First operand 3858 states and 10356 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:22,818 INFO L93 Difference]: Finished difference Result 4988 states and 12759 transitions. [2022-07-14 14:09:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:22,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:09:22,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:22,836 INFO L225 Difference]: With dead ends: 4988 [2022-07-14 14:09:22,837 INFO L226 Difference]: Without dead ends: 4988 [2022-07-14 14:09:22,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:22,837 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 117 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:22,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 61 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:09:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2022-07-14 14:09:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4184. [2022-07-14 14:09:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 4102 states have (on average 2.7635299853729887) internal successors, (11336), 4183 states have internal predecessors, (11336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 11336 transitions. [2022-07-14 14:09:22,936 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 11336 transitions. Word has length 11 [2022-07-14 14:09:22,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:22,936 INFO L495 AbstractCegarLoop]: Abstraction has 4184 states and 11336 transitions. [2022-07-14 14:09:22,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 11336 transitions. [2022-07-14 14:09:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:22,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:22,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:22,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 14:09:22,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:09:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1585991820, now seen corresponding path program 1 times [2022-07-14 14:09:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:22,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363061593] [2022-07-14 14:09:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:22,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:22,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363061593] [2022-07-14 14:09:22,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363061593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:22,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:22,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053837576] [2022-07-14 14:09:22,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:22,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:22,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:22,983 INFO L87 Difference]: Start difference. First operand 4184 states and 11336 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:23,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:23,205 INFO L93 Difference]: Finished difference Result 4516 states and 11465 transitions. [2022-07-14 14:09:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:23,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:09:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:23,217 INFO L225 Difference]: With dead ends: 4516 [2022-07-14 14:09:23,217 INFO L226 Difference]: Without dead ends: 4480 [2022-07-14 14:09:23,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:23,219 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 110 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:23,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 81 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:09:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2022-07-14 14:09:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 3800. [2022-07-14 14:09:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3720 states have (on average 2.717204301075269) internal successors, (10108), 3799 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 10108 transitions. [2022-07-14 14:09:23,322 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 10108 transitions. Word has length 11 [2022-07-14 14:09:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:23,322 INFO L495 AbstractCegarLoop]: Abstraction has 3800 states and 10108 transitions. [2022-07-14 14:09:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 10108 transitions. [2022-07-14 14:09:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:23,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:23,323 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-07-14 14:09:23,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-14 14:09:23,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-07-14 14:09:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2053090947, now seen corresponding path program 1 times [2022-07-14 14:09:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:23,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701860379] [2022-07-14 14:09:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:23,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:23,333 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:09:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:23,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:09:23,344 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:09:23,344 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-07-14 14:09:23,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-07-14 14:09:23,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-07-14 14:09:23,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-07-14 14:09:23,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-07-14 14:09:23,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-07-14 14:09:23,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-07-14 14:09:23,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-07-14 14:09:23,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-07-14 14:09:23,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-07-14 14:09:23,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-07-14 14:09:23,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-07-14 14:09:23,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-07-14 14:09:23,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-07-14 14:09:23,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-07-14 14:09:23,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-07-14 14:09:23,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-07-14 14:09:23,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 14:09:23,347 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:23,347 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:09:23,347 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-14 14:09:23,359 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-14 14:09:23,361 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:09:23,361 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 220 transitions, 470 flow [2022-07-14 14:09:23,361 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 220 transitions, 470 flow [2022-07-14 14:09:23,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 220 transitions, 470 flow [2022-07-14 14:09:23,420 INFO L129 PetriNetUnfolder]: 62/467 cut-off events. [2022-07-14 14:09:23,420 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-07-14 14:09:23,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 467 events. 62/467 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1572 event pairs, 1 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 315. Up to 16 conditions per place. [2022-07-14 14:09:23,450 INFO L116 LiptonReduction]: Number of co-enabled transitions 21816 [2022-07-14 14:09:27,100 INFO L131 LiptonReduction]: Checked pairs total: 54368 [2022-07-14 14:09:27,100 INFO L133 LiptonReduction]: Total number of compositions: 196 [2022-07-14 14:09:27,101 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 90 transitions, 210 flow [2022-07-14 14:09:28,814 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:28,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 14:09:28,816 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b70aa47, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fe689ec [2022-07-14 14:09:28,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-07-14 14:09:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:28,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 14:09:28,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:28,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 14:09:28,977 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)] === [2022-07-14 14:09:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1342711609, now seen corresponding path program 1 times [2022-07-14 14:09:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:28,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933004595] [2022-07-14 14:09:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:28,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933004595] [2022-07-14 14:09:28,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933004595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:28,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:28,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:28,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045877556] [2022-07-14 14:09:28,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:28,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:28,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:29,124 INFO L87 Difference]: Start difference. First operand has 65789 states, 64832 states have (on average 4.972822063178677) internal successors, (322398), 65788 states have internal predecessors, (322398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:30,267 INFO L93 Difference]: Finished difference Result 65753 states and 242942 transitions. [2022-07-14 14:09:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:30,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 14:09:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:30,840 INFO L225 Difference]: With dead ends: 65753 [2022-07-14 14:09:30,840 INFO L226 Difference]: Without dead ends: 65627 [2022-07-14 14:09:30,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:30,842 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:30,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 18 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65627 states. [2022-07-14 14:09:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65627 to 65627. [2022-07-14 14:09:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65627 states, 64688 states have (on average 3.7490106356665844) internal successors, (242516), 65626 states have internal predecessors, (242516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65627 states to 65627 states and 242516 transitions. [2022-07-14 14:09:33,649 INFO L78 Accepts]: Start accepts. Automaton has 65627 states and 242516 transitions. Word has length 5 [2022-07-14 14:09:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:33,649 INFO L495 AbstractCegarLoop]: Abstraction has 65627 states and 242516 transitions. [2022-07-14 14:09:33,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 65627 states and 242516 transitions. [2022-07-14 14:09:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 14:09:33,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:33,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:33,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 14:09:33,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:09:33,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1864887292, now seen corresponding path program 1 times [2022-07-14 14:09:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:33,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287484990] [2022-07-14 14:09:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:33,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:33,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287484990] [2022-07-14 14:09:33,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287484990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:33,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:33,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-14 14:09:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236674558] [2022-07-14 14:09:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:33,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:33,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:33,673 INFO L87 Difference]: Start difference. First operand 65627 states and 242516 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:34,378 INFO L93 Difference]: Finished difference Result 62409 states and 229729 transitions. [2022-07-14 14:09:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-14 14:09:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:34,735 INFO L225 Difference]: With dead ends: 62409 [2022-07-14 14:09:34,736 INFO L226 Difference]: Without dead ends: 62409 [2022-07-14 14:09:34,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:34,736 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:34,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 18 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:35,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62409 states. [2022-07-14 14:09:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62409 to 62403. [2022-07-14 14:09:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62403 states, 61512 states have (on average 3.7344908310573546) internal successors, (229716), 62402 states have internal predecessors, (229716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:37,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62403 states to 62403 states and 229716 transitions. [2022-07-14 14:09:37,145 INFO L78 Accepts]: Start accepts. Automaton has 62403 states and 229716 transitions. Word has length 7 [2022-07-14 14:09:37,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:37,145 INFO L495 AbstractCegarLoop]: Abstraction has 62403 states and 229716 transitions. [2022-07-14 14:09:37,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 62403 states and 229716 transitions. [2022-07-14 14:09:37,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:09:37,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:37,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:09:37,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 14:09:37,147 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)] === [2022-07-14 14:09:37,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:37,147 INFO L85 PathProgramCache]: Analyzing trace with hash 967097054, now seen corresponding path program 1 times [2022-07-14 14:09:37,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:37,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979398304] [2022-07-14 14:09:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:37,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 14:09:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:37,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979398304] [2022-07-14 14:09:37,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979398304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:37,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:37,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:09:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017001101] [2022-07-14 14:09:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:37,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:37,170 INFO L87 Difference]: Start difference. First operand 62403 states and 229716 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:37,598 INFO L93 Difference]: Finished difference Result 58293 states and 214308 transitions. [2022-07-14 14:09:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:37,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:09:37,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:38,342 INFO L225 Difference]: With dead ends: 58293 [2022-07-14 14:09:38,342 INFO L226 Difference]: Without dead ends: 58293 [2022-07-14 14:09:38,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:38,343 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 16 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 14:09:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58293 states. [2022-07-14 14:09:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58293 to 58293. [2022-07-14 14:09:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58293 states, 57540 states have (on average 3.724504692387904) internal successors, (214308), 58292 states have internal predecessors, (214308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58293 states to 58293 states and 214308 transitions. [2022-07-14 14:09:40,297 INFO L78 Accepts]: Start accepts. Automaton has 58293 states and 214308 transitions. Word has length 9 [2022-07-14 14:09:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:40,297 INFO L495 AbstractCegarLoop]: Abstraction has 58293 states and 214308 transitions. [2022-07-14 14:09:40,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 58293 states and 214308 transitions. [2022-07-14 14:09:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 14:09:40,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:40,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:09:40,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-14 14:09:40,298 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)] === [2022-07-14 14:09:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash 967097056, now seen corresponding path program 1 times [2022-07-14 14:09:40,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:40,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640228435] [2022-07-14 14:09:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:40,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:40,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640228435] [2022-07-14 14:09:40,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640228435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:40,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:40,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:09:40,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233178634] [2022-07-14 14:09:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:40,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 14:09:40,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:09:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:40,339 INFO L87 Difference]: Start difference. First operand 58293 states and 214308 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:41,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:41,067 INFO L93 Difference]: Finished difference Result 54183 states and 198900 transitions. [2022-07-14 14:09:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:09:41,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-14 14:09:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:41,338 INFO L225 Difference]: With dead ends: 54183 [2022-07-14 14:09:41,339 INFO L226 Difference]: Without dead ends: 54183 [2022-07-14 14:09:41,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:09:41,339 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:41,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 9 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 14:09:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54183 states. [2022-07-14 14:09:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54183 to 54183. [2022-07-14 14:09:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54183 states, 53568 states have (on average 3.713037634408602) internal successors, (198900), 54182 states have internal predecessors, (198900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54183 states to 54183 states and 198900 transitions. [2022-07-14 14:09:43,624 INFO L78 Accepts]: Start accepts. Automaton has 54183 states and 198900 transitions. Word has length 9 [2022-07-14 14:09:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:43,625 INFO L495 AbstractCegarLoop]: Abstraction has 54183 states and 198900 transitions. [2022-07-14 14:09:43,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 54183 states and 198900 transitions. [2022-07-14 14:09:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:43,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:43,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:43,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-14 14:09:43,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:09:43,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2090573677, now seen corresponding path program 1 times [2022-07-14 14:09:43,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:43,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484761559] [2022-07-14 14:09:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:43,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:43,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:43,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484761559] [2022-07-14 14:09:43,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484761559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:43,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:43,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:43,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730588257] [2022-07-14 14:09:43,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:43,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:43,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:43,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:43,661 INFO L87 Difference]: Start difference. First operand 54183 states and 198900 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:44,437 INFO L93 Difference]: Finished difference Result 79528 states and 280193 transitions. [2022-07-14 14:09:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:44,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:09:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:44,857 INFO L225 Difference]: With dead ends: 79528 [2022-07-14 14:09:44,857 INFO L226 Difference]: Without dead ends: 79528 [2022-07-14 14:09:44,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:44,858 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 220 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:44,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 64 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:09:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79528 states. [2022-07-14 14:09:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79528 to 71085. [2022-07-14 14:09:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71085 states, 70491 states have (on average 3.6526365067881006) internal successors, (257478), 71084 states have internal predecessors, (257478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71085 states to 71085 states and 257478 transitions. [2022-07-14 14:09:47,616 INFO L78 Accepts]: Start accepts. Automaton has 71085 states and 257478 transitions. Word has length 11 [2022-07-14 14:09:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:47,617 INFO L495 AbstractCegarLoop]: Abstraction has 71085 states and 257478 transitions. [2022-07-14 14:09:47,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 71085 states and 257478 transitions. [2022-07-14 14:09:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-14 14:09:47,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:47,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:47,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-14 14:09:47,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-07-14 14:09:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2090573613, now seen corresponding path program 1 times [2022-07-14 14:09:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:47,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77044799] [2022-07-14 14:09:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:47,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:09:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:09:47,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:09:47,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77044799] [2022-07-14 14:09:47,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77044799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:09:47,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:09:47,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:09:47,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463589022] [2022-07-14 14:09:47,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:09:47,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 14:09:47,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:09:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 14:09:47,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 14:09:47,652 INFO L87 Difference]: Start difference. First operand 71085 states and 257478 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:48,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:09:48,883 INFO L93 Difference]: Finished difference Result 83607 states and 286793 transitions. [2022-07-14 14:09:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 14:09:48,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-14 14:09:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 14:09:49,284 INFO L225 Difference]: With dead ends: 83607 [2022-07-14 14:09:49,284 INFO L226 Difference]: Without dead ends: 83538 [2022-07-14 14:09:49,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 14:09:49,285 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 188 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 14:09:49,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 85 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 14:09:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83538 states. [2022-07-14 14:09:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83538 to 75358. [2022-07-14 14:09:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75358 states, 74815 states have (on average 3.5289714629419233) internal successors, (264020), 75357 states have internal predecessors, (264020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75358 states to 75358 states and 264020 transitions. [2022-07-14 14:09:52,226 INFO L78 Accepts]: Start accepts. Automaton has 75358 states and 264020 transitions. Word has length 11 [2022-07-14 14:09:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 14:09:52,226 INFO L495 AbstractCegarLoop]: Abstraction has 75358 states and 264020 transitions. [2022-07-14 14:09:52,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:09:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 75358 states and 264020 transitions. [2022-07-14 14:09:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-14 14:09:52,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 14:09:52,228 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-07-14 14:09:52,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-14 14:09:52,228 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)] === [2022-07-14 14:09:52,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:09:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash -193502113, now seen corresponding path program 1 times [2022-07-14 14:09:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:09:52,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365808391] [2022-07-14 14:09:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:09:52,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:09:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:52,276 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:09:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:09:52,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:09:52,326 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 14:09:52,327 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-07-14 14:09:52,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-07-14 14:09:52,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-07-14 14:09:52,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-07-14 14:09:52,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-07-14 14:09:52,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-07-14 14:09:52,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-07-14 14:09:52,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-07-14 14:09:52,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-07-14 14:09:52,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-07-14 14:09:52,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-07-14 14:09:52,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-07-14 14:09:52,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-07-14 14:09:52,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-07-14 14:09:52,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-14 14:09:52,330 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:09:52,331 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-14 14:09:52,331 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-14 14:09:52,346 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-14 14:09:52,348 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-14 14:09:52,349 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 258 transitions, 560 flow [2022-07-14 14:09:52,363 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 258 transitions, 560 flow [2022-07-14 14:09:52,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 258 transitions, 560 flow [2022-07-14 14:09:52,428 INFO L129 PetriNetUnfolder]: 96/711 cut-off events. [2022-07-14 14:09:52,429 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-07-14 14:09:52,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 711 events. 96/711 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2761 event pairs, 6 based on Foata normal form. 0/561 useless extension candidates. Maximal degree in co-relation 487. Up to 32 conditions per place. [2022-07-14 14:09:52,458 INFO L116 LiptonReduction]: Number of co-enabled transitions 34704 [2022-07-14 14:09:56,496 INFO L131 LiptonReduction]: Checked pairs total: 95255 [2022-07-14 14:09:56,496 INFO L133 LiptonReduction]: Total number of compositions: 228 [2022-07-14 14:09:56,497 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 113 transitions, 270 flow