./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_51-mutexptr_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 --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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:48:39,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:48:39,730 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:48:39,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:48:39,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:48:39,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:48:39,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:48:39,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:48:39,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:48:39,769 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:48:39,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:48:39,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:48:39,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:48:39,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:48:39,771 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:48:39,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:48:39,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:48:39,772 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:48:39,772 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:48:39,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:48:39,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:48:39,773 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:48:39,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:48:39,774 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:48:39,774 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:48:39,774 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:48:39,775 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:48:39,775 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:48:39,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:48:39,775 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:48:39,776 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:48:39,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:48:39,776 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:48:39,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:48:39,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:39,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:48:39,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:48:39,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:48:39,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:48:39,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:48:39,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:48:39,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:48:39,779 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:48:39,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:48:39,780 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2024-11-17 07:48:40,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:48:40,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:48:40,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:48:40,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:48:40,090 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:48:40,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-11-17 07:48:41,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:48:41,895 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:48:41,896 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-11-17 07:48:41,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ace76d7/811f3766dcb64143b7c126cab6d4f944/FLAGf3ca11c56 [2024-11-17 07:48:41,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ace76d7/811f3766dcb64143b7c126cab6d4f944 [2024-11-17 07:48:41,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:48:41,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:48:41,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:41,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:48:41,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:48:41,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:41" (1/1) ... [2024-11-17 07:48:41,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400e30d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:41, skipping insertion in model container [2024-11-17 07:48:41,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:41" (1/1) ... [2024-11-17 07:48:41,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:48:42,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:42,424 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:48:42,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:42,514 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:48:42,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42 WrapperNode [2024-11-17 07:48:42,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:42,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:42,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:48:42,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:48:42,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,566 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 142 [2024-11-17 07:48:42,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:42,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:48:42,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:48:42,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:48:42,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,614 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 2, 5, 5, 6]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 5, 5, 1]. The 3 writes are split as follows [0, 1, 0, 0, 2]. [2024-11-17 07:48:42,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,629 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,633 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:48:42,638 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:48:42,638 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:48:42,638 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:48:42,645 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (1/1) ... [2024-11-17 07:48:42,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:42,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:42,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:48:42,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:48:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:48:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:48:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:48:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:48:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 07:48:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:48:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:48:42,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:48:42,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:48:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 07:48:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:48:42,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:48:42,724 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:48:42,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:48:42,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:48:42,729 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:48:42,885 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:48:42,887 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:48:43,189 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:48:43,189 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L713-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 07:48:43,266 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:48:43,266 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:48:43,605 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:48:43,605 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:48:43,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:43 BoogieIcfgContainer [2024-11-17 07:48:43,606 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:48:43,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:48:43,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:48:43,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:48:43,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:48:41" (1/3) ... [2024-11-17 07:48:43,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd11ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:43, skipping insertion in model container [2024-11-17 07:48:43,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:42" (2/3) ... [2024-11-17 07:48:43,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd11ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:43, skipping insertion in model container [2024-11-17 07:48:43,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:43" (3/3) ... [2024-11-17 07:48:43,618 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-11-17 07:48:43,637 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:48:43,637 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:48:43,638 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:48:43,699 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:48:43,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 69 transitions, 145 flow [2024-11-17 07:48:43,787 INFO L124 PetriNetUnfolderBase]: 15/91 cut-off events. [2024-11-17 07:48:43,787 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:43,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 15/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 277 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2024-11-17 07:48:43,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 69 transitions, 145 flow [2024-11-17 07:48:43,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 68 transitions, 143 flow [2024-11-17 07:48:43,812 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:43,818 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59cf5b73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:43,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:48:43,827 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:43,827 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:48:43,827 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:43,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:43,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:43,829 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:48:43,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:43,835 INFO L85 PathProgramCache]: Analyzing trace with hash 548540763, now seen corresponding path program 1 times [2024-11-17 07:48:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:43,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289503741] [2024-11-17 07:48:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:44,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:44,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289503741] [2024-11-17 07:48:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289503741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:44,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:44,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977448736] [2024-11-17 07:48:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:44,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:44,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:44,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:44,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 69 [2024-11-17 07:48:44,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:44,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:44,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 69 [2024-11-17 07:48:44,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:44,671 INFO L124 PetriNetUnfolderBase]: 156/480 cut-off events. [2024-11-17 07:48:44,672 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:44,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 480 events. 156/480 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2409 event pairs, 0 based on Foata normal form. 150/612 useless extension candidates. Maximal degree in co-relation 795. Up to 302 conditions per place. [2024-11-17 07:48:44,680 INFO L140 encePairwiseOnDemand]: 53/69 looper letters, 50 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-17 07:48:44,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 81 transitions, 275 flow [2024-11-17 07:48:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-17 07:48:44,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6920289855072463 [2024-11-17 07:48:44,693 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 143 flow. Second operand 4 states and 191 transitions. [2024-11-17 07:48:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 81 transitions, 275 flow [2024-11-17 07:48:44,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:48:44,700 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 129 flow [2024-11-17 07:48:44,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-17 07:48:44,708 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-11-17 07:48:44,708 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 129 flow [2024-11-17 07:48:44,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:44,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:44,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:44,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:48:44,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:48:44,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1827121993, now seen corresponding path program 1 times [2024-11-17 07:48:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651289031] [2024-11-17 07:48:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:44,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:48:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:44,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:48:44,839 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:48:44,842 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-17 07:48:44,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:48:44,844 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:48:44,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:48:44,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:48:44,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:48:44,845 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-17 07:48:44,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-17 07:48:44,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-17 07:48:44,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:48:44,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:48:44,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:48:44,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:48:44,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:48:44,848 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:48:44,852 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:48:44,853 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:48:44,902 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:48:44,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 104 transitions, 224 flow [2024-11-17 07:48:44,940 INFO L124 PetriNetUnfolderBase]: 28/170 cut-off events. [2024-11-17 07:48:44,940 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:48:44,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 170 events. 28/170 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 615 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2024-11-17 07:48:44,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 104 transitions, 224 flow [2024-11-17 07:48:44,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 104 transitions, 224 flow [2024-11-17 07:48:44,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:44,951 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59cf5b73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:44,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 07:48:44,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:44,957 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:48:44,957 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:44,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:44,959 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:44,960 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:44,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash -669715396, now seen corresponding path program 1 times [2024-11-17 07:48:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:44,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9513627] [2024-11-17 07:48:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:45,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:45,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9513627] [2024-11-17 07:48:45,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9513627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:45,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:45,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654060129] [2024-11-17 07:48:45,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:45,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:45,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 104 [2024-11-17 07:48:45,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 104 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:45,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:45,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 104 [2024-11-17 07:48:45,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:46,437 INFO L124 PetriNetUnfolderBase]: 5066/11401 cut-off events. [2024-11-17 07:48:46,438 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-17 07:48:46,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19497 conditions, 11401 events. 5066/11401 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 101168 event pairs, 2388 based on Foata normal form. 3325/13874 useless extension candidates. Maximal degree in co-relation 1442. Up to 7984 conditions per place. [2024-11-17 07:48:46,525 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 69 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2024-11-17 07:48:46,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 390 flow [2024-11-17 07:48:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-11-17 07:48:46,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2024-11-17 07:48:46,532 INFO L175 Difference]: Start difference. First operand has 91 places, 104 transitions, 224 flow. Second operand 4 states and 276 transitions. [2024-11-17 07:48:46,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 390 flow [2024-11-17 07:48:46,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:48:46,537 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 216 flow [2024-11-17 07:48:46,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-11-17 07:48:46,538 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-17 07:48:46,540 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 216 flow [2024-11-17 07:48:46,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:46,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:46,541 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:46,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:48:46,541 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:46,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1838715782, now seen corresponding path program 1 times [2024-11-17 07:48:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763137144] [2024-11-17 07:48:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:46,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:46,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763137144] [2024-11-17 07:48:46,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763137144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661785899] [2024-11-17 07:48:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:46,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:46,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:46,733 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) [2024-11-17 07:48:46,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:48:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:46,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:48:46,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:46,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:48:46,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661785899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:46,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:48:46,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:48:46,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091652389] [2024-11-17 07:48:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:46,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:48:46,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:48:46,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:48:46,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 104 [2024-11-17 07:48:46,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:46,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:46,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 104 [2024-11-17 07:48:46,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:48,259 INFO L124 PetriNetUnfolderBase]: 4754/9995 cut-off events. [2024-11-17 07:48:48,260 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2024-11-17 07:48:48,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18355 conditions, 9995 events. 4754/9995 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 84351 event pairs, 442 based on Foata normal form. 169/9758 useless extension candidates. Maximal degree in co-relation 1408. Up to 4698 conditions per place. [2024-11-17 07:48:48,329 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 113 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2024-11-17 07:48:48,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 162 transitions, 596 flow [2024-11-17 07:48:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:48:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:48:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2024-11-17 07:48:48,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-11-17 07:48:48,332 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 216 flow. Second operand 6 states and 378 transitions. [2024-11-17 07:48:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 162 transitions, 596 flow [2024-11-17 07:48:48,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 162 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:48,337 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 222 flow [2024-11-17 07:48:48,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-11-17 07:48:48,339 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2024-11-17 07:48:48,340 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 222 flow [2024-11-17 07:48:48,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:48,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:48,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:48,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:48:48,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:48,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:48,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2070252781, now seen corresponding path program 1 times [2024-11-17 07:48:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110552329] [2024-11-17 07:48:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:48,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:48,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110552329] [2024-11-17 07:48:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110552329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:48,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:48,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615928798] [2024-11-17 07:48:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:48,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:48,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:48:48,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:48,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:48,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:48:48,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:50,304 INFO L124 PetriNetUnfolderBase]: 6126/13501 cut-off events. [2024-11-17 07:48:50,304 INFO L125 PetriNetUnfolderBase]: For 942/1121 co-relation queries the response was YES. [2024-11-17 07:48:50,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24084 conditions, 13501 events. 6126/13501 cut-off events. For 942/1121 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 123030 event pairs, 1719 based on Foata normal form. 221/13045 useless extension candidates. Maximal degree in co-relation 18308. Up to 6013 conditions per place. [2024-11-17 07:48:50,382 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 123 selfloop transitions, 12 changer transitions 0/180 dead transitions. [2024-11-17 07:48:50,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 180 transitions, 722 flow [2024-11-17 07:48:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:48:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:48:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 361 transitions. [2024-11-17 07:48:50,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6942307692307692 [2024-11-17 07:48:50,384 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 222 flow. Second operand 5 states and 361 transitions. [2024-11-17 07:48:50,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 180 transitions, 722 flow [2024-11-17 07:48:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 180 transitions, 711 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:48:50,392 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 310 flow [2024-11-17 07:48:50,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2024-11-17 07:48:50,394 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2024-11-17 07:48:50,394 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 310 flow [2024-11-17 07:48:50,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:50,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:50,394 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:48:50,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:48:50,395 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:50,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:50,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1165614843, now seen corresponding path program 1 times [2024-11-17 07:48:50,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:50,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994582062] [2024-11-17 07:48:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:50,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:48:50,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:50,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994582062] [2024-11-17 07:48:50,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994582062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:50,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:50,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:48:50,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292439624] [2024-11-17 07:48:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:50,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:50,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:50,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 104 [2024-11-17 07:48:50,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:50,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:50,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 104 [2024-11-17 07:48:50,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:51,911 INFO L124 PetriNetUnfolderBase]: 6372/13802 cut-off events. [2024-11-17 07:48:51,911 INFO L125 PetriNetUnfolderBase]: For 5056/5060 co-relation queries the response was YES. [2024-11-17 07:48:51,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28166 conditions, 13802 events. 6372/13802 cut-off events. For 5056/5060 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 123585 event pairs, 1280 based on Foata normal form. 177/13647 useless extension candidates. Maximal degree in co-relation 21526. Up to 8827 conditions per place. [2024-11-17 07:48:51,993 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 109 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2024-11-17 07:48:51,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 158 transitions, 718 flow [2024-11-17 07:48:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-11-17 07:48:51,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6370192307692307 [2024-11-17 07:48:51,995 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 310 flow. Second operand 4 states and 265 transitions. [2024-11-17 07:48:51,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 158 transitions, 718 flow [2024-11-17 07:48:52,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 158 transitions, 714 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:52,011 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 322 flow [2024-11-17 07:48:52,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2024-11-17 07:48:52,014 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 15 predicate places. [2024-11-17 07:48:52,015 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 322 flow [2024-11-17 07:48:52,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:52,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:52,015 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:48:52,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:48:52,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:48:52,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 21756437, now seen corresponding path program 1 times [2024-11-17 07:48:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047135298] [2024-11-17 07:48:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:52,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:48:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:52,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:48:52,077 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:48:52,077 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-17 07:48:52,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-17 07:48:52,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-17 07:48:52,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-17 07:48:52,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-17 07:48:52,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-17 07:48:52,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-17 07:48:52,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-17 07:48:52,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-17 07:48:52,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-17 07:48:52,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-17 07:48:52,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-17 07:48:52,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-17 07:48:52,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-17 07:48:52,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-17 07:48:52,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-17 07:48:52,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-17 07:48:52,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:48:52,084 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 07:48:52,085 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:48:52,085 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:48:52,114 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:48:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 139 transitions, 305 flow [2024-11-17 07:48:52,143 INFO L124 PetriNetUnfolderBase]: 46/274 cut-off events. [2024-11-17 07:48:52,143 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 07:48:52,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 274 events. 46/274 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1087 event pairs, 1 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 185. Up to 16 conditions per place. [2024-11-17 07:48:52,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 139 transitions, 305 flow [2024-11-17 07:48:52,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 139 transitions, 305 flow [2024-11-17 07:48:52,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:52,151 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59cf5b73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:52,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 07:48:52,156 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:52,156 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:48:52,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:52,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:52,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:52,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:48:52,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:52,157 INFO L85 PathProgramCache]: Analyzing trace with hash -852550595, now seen corresponding path program 1 times [2024-11-17 07:48:52,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:52,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534842435] [2024-11-17 07:48:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:48:52,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:52,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534842435] [2024-11-17 07:48:52,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534842435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:52,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:52,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131233307] [2024-11-17 07:48:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:52,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:52,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 139 [2024-11-17 07:48:52,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 139 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:48:52,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:52,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 139 [2024-11-17 07:48:52,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:07,097 INFO L124 PetriNetUnfolderBase]: 103447/191406 cut-off events. [2024-11-17 07:49:07,097 INFO L125 PetriNetUnfolderBase]: For 1921/1921 co-relation queries the response was YES. [2024-11-17 07:49:07,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335845 conditions, 191406 events. 103447/191406 cut-off events. For 1921/1921 co-relation queries the response was YES. Maximal size of possible extension queue 4004. Compared 2089950 event pairs, 97235 based on Foata normal form. 60995/238769 useless extension candidates. Maximal degree in co-relation 147493. Up to 143090 conditions per place. [2024-11-17 07:49:08,856 INFO L140 encePairwiseOnDemand]: 111/139 looper letters, 83 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-11-17 07:49:08,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 144 transitions, 487 flow [2024-11-17 07:49:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:49:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:49:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2024-11-17 07:49:08,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6402877697841727 [2024-11-17 07:49:08,859 INFO L175 Difference]: Start difference. First operand has 121 places, 139 transitions, 305 flow. Second operand 4 states and 356 transitions. [2024-11-17 07:49:08,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 144 transitions, 487 flow [2024-11-17 07:49:08,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 144 transitions, 487 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:49:08,865 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 285 flow [2024-11-17 07:49:08,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2024-11-17 07:49:08,866 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 5 predicate places. [2024-11-17 07:49:08,866 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 285 flow [2024-11-17 07:49:08,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:08,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:08,867 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:08,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:49:08,867 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:49:08,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:08,868 INFO L85 PathProgramCache]: Analyzing trace with hash -898294072, now seen corresponding path program 1 times [2024-11-17 07:49:08,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:08,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542789959] [2024-11-17 07:49:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542789959] [2024-11-17 07:49:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542789959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:49:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330920527] [2024-11-17 07:49:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:08,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:49:08,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:49:08,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:49:08,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:49:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:09,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:49:09,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:49:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:09,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:49:09,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330920527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:49:09,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:49:09,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:49:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970892826] [2024-11-17 07:49:09,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:49:09,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:49:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:49:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:49:09,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 139 [2024-11-17 07:49:09,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:09,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:09,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 139 [2024-11-17 07:49:09,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:49:21,417 INFO L124 PetriNetUnfolderBase]: 97051/165385 cut-off events. [2024-11-17 07:49:21,417 INFO L125 PetriNetUnfolderBase]: For 8829/8829 co-relation queries the response was YES. [2024-11-17 07:49:21,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310595 conditions, 165385 events. 97051/165385 cut-off events. For 8829/8829 co-relation queries the response was YES. Maximal size of possible extension queue 3369. Compared 1660990 event pairs, 21977 based on Foata normal form. 2366/161345 useless extension candidates. Maximal degree in co-relation 262624. Up to 83865 conditions per place. [2024-11-17 07:49:22,749 INFO L140 encePairwiseOnDemand]: 134/139 looper letters, 151 selfloop transitions, 6 changer transitions 0/215 dead transitions. [2024-11-17 07:49:22,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 215 transitions, 789 flow [2024-11-17 07:49:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:49:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:49:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2024-11-17 07:49:22,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6067146282973621 [2024-11-17 07:49:22,751 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 285 flow. Second operand 6 states and 506 transitions. [2024-11-17 07:49:22,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 215 transitions, 789 flow [2024-11-17 07:49:22,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 215 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:49:22,785 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 291 flow [2024-11-17 07:49:22,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2024-11-17 07:49:22,786 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 8 predicate places. [2024-11-17 07:49:22,787 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 291 flow [2024-11-17 07:49:22,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:22,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:49:22,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:49:22,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:49:22,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-17 07:49:22,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:49:22,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:49:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1207214770, now seen corresponding path program 1 times [2024-11-17 07:49:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:49:22,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682177868] [2024-11-17 07:49:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:49:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:49:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:49:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:49:23,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:49:23,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682177868] [2024-11-17 07:49:23,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682177868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:49:23,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:49:23,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:49:23,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225899652] [2024-11-17 07:49:23,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:49:23,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:49:23,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:49:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:49:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:49:23,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 139 [2024-11-17 07:49:23,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:49:23,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:49:23,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 139 [2024-11-17 07:49:23,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand