./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1 --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 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:44:57,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:44:57,585 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 06:44:57,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:44:57,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:44:57,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:44:57,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:44:57,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:44:57,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:44:57,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:44:57,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:44:57,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:44:57,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:44:57,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:44:57,618 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:44:57,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:44:57,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:44:57,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:44:57,620 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:44:57,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:44:57,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:44:57,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:44:57,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:44:57,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:44:57,622 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1 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 -> 3e2d1ca14c91be6e836759580a015ed2d4b9eb8ea9888f9f925ea579405b630f [2024-12-02 06:44:57,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:44:57,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:44:57,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:44:57,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:44:57,930 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:44:57,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-12-02 06:45:01,266 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/data/ff4d5617c/cc2ae6d414e94283992bac6bd9340b7b/FLAGfa573faf2 [2024-12-02 06:45:01,546 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:45:01,547 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/sv-benchmarks/c/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-12-02 06:45:01,563 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/data/ff4d5617c/cc2ae6d414e94283992bac6bd9340b7b/FLAGfa573faf2 [2024-12-02 06:45:01,831 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/data/ff4d5617c/cc2ae6d414e94283992bac6bd9340b7b [2024-12-02 06:45:01,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:45:01,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:45:01,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:45:01,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:45:01,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:45:01,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:45:01" (1/1) ... [2024-12-02 06:45:01,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8019f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:01, skipping insertion in model container [2024-12-02 06:45:01,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:45:01" (1/1) ... [2024-12-02 06:45:01,886 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:45:02,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:45:02,342 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:45:02,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:45:02,455 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:45:02,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02 WrapperNode [2024-12-02 06:45:02,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:45:02,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:45:02,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:45:02,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:45:02,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,504 INFO L138 Inliner]: procedures = 252, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 145 [2024-12-02 06:45:02,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:45:02,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:45:02,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:45:02,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:45:02,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,534 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-12-02 06:45:02,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,542 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:45:02,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:45:02,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:45:02,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:45:02,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (1/1) ... [2024-12-02 06:45:02,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:45:02,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:45:02,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:45:02,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13c50dae-43c5-4180-80c0-efab8414df76/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:45:02,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 06:45:02,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-12-02 06:45:02,615 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:45:02,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 06:45:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 06:45:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 06:45:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 06:45:02,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:45:02,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:45:02,618 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 06:45:02,762 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:45:02,764 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:45:03,045 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 06:45:03,045 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:45:03,255 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:45:03,255 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 06:45:03,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:45:03 BoogieIcfgContainer [2024-12-02 06:45:03,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:45:03,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:45:03,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:45:03,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:45:03,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:45:01" (1/3) ... [2024-12-02 06:45:03,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b74eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:45:03, skipping insertion in model container [2024-12-02 06:45:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:45:02" (2/3) ... [2024-12-02 06:45:03,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b74eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:45:03, skipping insertion in model container [2024-12-02 06:45:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:45:03" (3/3) ... [2024-12-02 06:45:03,267 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-12-02 06:45:03,283 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:45:03,285 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_28-funptr_racefree.i that has 2 procedures, 59 locations, 1 initial locations, 6 loop locations, and 8 error locations. [2024-12-02 06:45:03,285 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 06:45:03,342 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-12-02 06:45:03,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 68 transitions, 143 flow [2024-12-02 06:45:03,434 INFO L124 PetriNetUnfolderBase]: 11/87 cut-off events. [2024-12-02 06:45:03,437 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 06:45:03,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 87 events. 11/87 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 239 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2024-12-02 06:45:03,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 68 transitions, 143 flow [2024-12-02 06:45:03,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 141 flow [2024-12-02 06:45:03,456 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:45:03,470 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;@28a05a61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:45:03,470 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-12-02 06:45:03,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:45:03,477 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 06:45:03,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:45:03,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:03,478 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 06:45:03,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 06:45:03,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:03,485 INFO L85 PathProgramCache]: Analyzing trace with hash 386951177, now seen corresponding path program 1 times [2024-12-02 06:45:03,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:03,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560639938] [2024-12-02 06:45:03,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:03,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560639938] [2024-12-02 06:45:03,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560639938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:45:03,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:45:03,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:45:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267441073] [2024-12-02 06:45:03,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:45:03,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:45:03,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:03,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:45:03,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:45:03,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-12-02 06:45:03,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-12-02 06:45:03,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:45:03,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-12-02 06:45:03,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:45:04,295 INFO L124 PetriNetUnfolderBase]: 240/694 cut-off events. [2024-12-02 06:45:04,295 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 06:45:04,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 694 events. 240/694 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3492 event pairs, 78 based on Foata normal form. 98/738 useless extension candidates. Maximal degree in co-relation 1185. Up to 464 conditions per place. [2024-12-02 06:45:04,303 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 64 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-12-02 06:45:04,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 321 flow [2024-12-02 06:45:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:45:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:45:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-12-02 06:45:04,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6691176470588235 [2024-12-02 06:45:04,322 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 141 flow. Second operand 4 states and 182 transitions. [2024-12-02 06:45:04,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 321 flow [2024-12-02 06:45:04,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 06:45:04,334 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 131 flow [2024-12-02 06:45:04,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-12-02 06:45:04,342 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-12-02 06:45:04,342 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 131 flow [2024-12-02 06:45:04,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-12-02 06:45:04,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:04,342 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-12-02 06:45:04,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:45:04,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-12-02 06:45:04,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:04,344 INFO L85 PathProgramCache]: Analyzing trace with hash -29312542, now seen corresponding path program 1 times [2024-12-02 06:45:04,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:04,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783581086] [2024-12-02 06:45:04,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:04,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:45:04,379 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 06:45:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:45:04,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 06:45:04,423 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 06:45:04,425 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-12-02 06:45:04,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-12-02 06:45:04,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-12-02 06:45:04,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-12-02 06:45:04,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-12-02 06:45:04,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-12-02 06:45:04,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-12-02 06:45:04,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-12-02 06:45:04,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-12-02 06:45:04,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-12-02 06:45:04,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-12-02 06:45:04,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-12-02 06:45:04,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-12-02 06:45:04,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:45:04,429 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 06:45:04,433 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 06:45:04,433 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 06:45:04,471 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 06:45:04,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 105 transitions, 226 flow [2024-12-02 06:45:04,502 INFO L124 PetriNetUnfolderBase]: 21/162 cut-off events. [2024-12-02 06:45:04,502 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 06:45:04,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 162 events. 21/162 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 590 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-12-02 06:45:04,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 105 transitions, 226 flow [2024-12-02 06:45:04,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 105 transitions, 226 flow [2024-12-02 06:45:04,508 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:45:04,509 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;@28a05a61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:45:04,509 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-12-02 06:45:04,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:45:04,512 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 06:45:04,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:45:04,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:04,512 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 06:45:04,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 06:45:04,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:04,514 INFO L85 PathProgramCache]: Analyzing trace with hash 487186837, now seen corresponding path program 1 times [2024-12-02 06:45:04,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:04,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793281509] [2024-12-02 06:45:04,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:04,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:04,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:04,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793281509] [2024-12-02 06:45:04,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793281509] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:45:04,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:45:04,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:45:04,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909694586] [2024-12-02 06:45:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:45:04,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:45:04,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:04,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:45:04,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:45:04,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-12-02 06:45:04,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-12-02 06:45:04,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:45:04,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-12-02 06:45:04,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:45:07,348 INFO L124 PetriNetUnfolderBase]: 9858/19690 cut-off events. [2024-12-02 06:45:07,348 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-12-02 06:45:07,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35206 conditions, 19690 events. 9858/19690 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 167504 event pairs, 4688 based on Foata normal form. 2837/20923 useless extension candidates. Maximal degree in co-relation 2015. Up to 15372 conditions per place. [2024-12-02 06:45:07,438 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 87 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-12-02 06:45:07,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 448 flow [2024-12-02 06:45:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:45:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:45:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-12-02 06:45:07,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-12-02 06:45:07,441 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 226 flow. Second operand 4 states and 263 transitions. [2024-12-02 06:45:07,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 448 flow [2024-12-02 06:45:07,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 06:45:07,446 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 222 flow [2024-12-02 06:45:07,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-12-02 06:45:07,447 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-12-02 06:45:07,447 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 222 flow [2024-12-02 06:45:07,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-12-02 06:45:07,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:07,448 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 06:45:07,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:45:07,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 06:45:07,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1377561510, now seen corresponding path program 1 times [2024-12-02 06:45:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:07,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916656915] [2024-12-02 06:45:07,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916656915] [2024-12-02 06:45:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916656915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:45:07,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:45:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:45:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762160893] [2024-12-02 06:45:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:45:07,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:45:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:07,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:45:07,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:45:07,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-12-02 06:45:07,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2024-12-02 06:45:07,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:45:07,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-12-02 06:45:07,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:45:09,525 INFO L124 PetriNetUnfolderBase]: 9314/17192 cut-off events. [2024-12-02 06:45:09,525 INFO L125 PetriNetUnfolderBase]: For 1139/1139 co-relation queries the response was YES. [2024-12-02 06:45:09,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33120 conditions, 17192 events. 9314/17192 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 137243 event pairs, 527 based on Foata normal form. 289/16590 useless extension candidates. Maximal degree in co-relation 1951. Up to 10580 conditions per place. [2024-12-02 06:45:09,590 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 147 selfloop transitions, 6 changer transitions 0/189 dead transitions. [2024-12-02 06:45:09,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 189 transitions, 718 flow [2024-12-02 06:45:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:45:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:45:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2024-12-02 06:45:09,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-12-02 06:45:09,593 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 222 flow. Second operand 6 states and 370 transitions. [2024-12-02 06:45:09,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 189 transitions, 718 flow [2024-12-02 06:45:09,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 189 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:45:09,599 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 228 flow [2024-12-02 06:45:09,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-12-02 06:45:09,600 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-12-02 06:45:09,600 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 228 flow [2024-12-02 06:45:09,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 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) [2024-12-02 06:45:09,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:09,601 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 06:45:09,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:45:09,601 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 06:45:09,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:09,602 INFO L85 PathProgramCache]: Analyzing trace with hash 245266653, now seen corresponding path program 1 times [2024-12-02 06:45:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:09,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297787716] [2024-12-02 06:45:09,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:09,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:09,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:09,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297787716] [2024-12-02 06:45:09,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297787716] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:45:09,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:45:09,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:45:09,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134944328] [2024-12-02 06:45:09,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:45:09,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:45:09,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:09,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:45:09,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:45:09,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 105 [2024-12-02 06:45:09,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-12-02 06:45:09,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:45:09,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 105 [2024-12-02 06:45:09,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:45:10,996 INFO L124 PetriNetUnfolderBase]: 8770/16053 cut-off events. [2024-12-02 06:45:10,996 INFO L125 PetriNetUnfolderBase]: For 2264/2264 co-relation queries the response was YES. [2024-12-02 06:45:11,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31761 conditions, 16053 events. 8770/16053 cut-off events. For 2264/2264 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 124845 event pairs, 635 based on Foata normal form. 289/15824 useless extension candidates. Maximal degree in co-relation 15354. Up to 11446 conditions per place. [2024-12-02 06:45:11,077 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 114 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-12-02 06:45:11,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 156 transitions, 594 flow [2024-12-02 06:45:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:45:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:45:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-12-02 06:45:11,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-12-02 06:45:11,080 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 228 flow. Second operand 4 states and 263 transitions. [2024-12-02 06:45:11,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 156 transitions, 594 flow [2024-12-02 06:45:11,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 156 transitions, 578 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-12-02 06:45:11,097 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 228 flow [2024-12-02 06:45:11,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-12-02 06:45:11,099 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2024-12-02 06:45:11,099 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 228 flow [2024-12-02 06:45:11,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-12-02 06:45:11,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:11,099 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-12-02 06:45:11,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:45:11,100 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-12-02 06:45:11,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash -521930915, now seen corresponding path program 1 times [2024-12-02 06:45:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587006987] [2024-12-02 06:45:11,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:45:11,125 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 06:45:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:45:11,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 06:45:11,147 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 06:45:11,147 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-12-02 06:45:11,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-12-02 06:45:11,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-12-02 06:45:11,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-12-02 06:45:11,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-12-02 06:45:11,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-12-02 06:45:11,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-12-02 06:45:11,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-12-02 06:45:11,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-12-02 06:45:11,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-12-02 06:45:11,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:45:11,150 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 06:45:11,152 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 06:45:11,152 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 06:45:11,194 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-12-02 06:45:11,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 142 transitions, 311 flow [2024-12-02 06:45:11,225 INFO L124 PetriNetUnfolderBase]: 34/256 cut-off events. [2024-12-02 06:45:11,226 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-12-02 06:45:11,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 34/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1068 event pairs, 1 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 177. Up to 12 conditions per place. [2024-12-02 06:45:11,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 142 transitions, 311 flow [2024-12-02 06:45:11,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 142 transitions, 311 flow [2024-12-02 06:45:11,231 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:45:11,232 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;@28a05a61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:45:11,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-12-02 06:45:11,234 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:45:11,234 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-12-02 06:45:11,234 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:45:11,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:11,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 06:45:11,235 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 06:45:11,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash 622731782, now seen corresponding path program 1 times [2024-12-02 06:45:11,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:11,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651127982] [2024-12-02 06:45:11,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:11,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:11,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651127982] [2024-12-02 06:45:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651127982] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:45:11,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:45:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:45:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423866795] [2024-12-02 06:45:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:45:11,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:45:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:11,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:45:11,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:45:11,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-12-02 06:45:11,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 142 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-12-02 06:45:11,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:45:11,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-12-02 06:45:11,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:45:47,875 INFO L124 PetriNetUnfolderBase]: 260231/450076 cut-off events. [2024-12-02 06:45:47,875 INFO L125 PetriNetUnfolderBase]: For 3306/3306 co-relation queries the response was YES. [2024-12-02 06:45:48,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809161 conditions, 450076 events. 260231/450076 cut-off events. For 3306/3306 co-relation queries the response was YES. Maximal size of possible extension queue 7431. Compared 4871907 event pairs, 170145 based on Foata normal form. 69821/485516 useless extension candidates. Maximal degree in co-relation 36511. Up to 356848 conditions per place. [2024-12-02 06:45:50,627 INFO L140 encePairwiseOnDemand]: 116/142 looper letters, 105 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2024-12-02 06:45:50,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 157 transitions, 557 flow [2024-12-02 06:45:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:45:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:45:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2024-12-02 06:45:50,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.596830985915493 [2024-12-02 06:45:50,629 INFO L175 Difference]: Start difference. First operand has 126 places, 142 transitions, 311 flow. Second operand 4 states and 339 transitions. [2024-12-02 06:45:50,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 157 transitions, 557 flow [2024-12-02 06:45:50,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 157 transitions, 557 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 06:45:50,640 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 295 flow [2024-12-02 06:45:50,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=131, PETRI_TRANSITIONS=124} [2024-12-02 06:45:50,641 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2024-12-02 06:45:50,641 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 295 flow [2024-12-02 06:45:50,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-12-02 06:45:50,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:45:50,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 06:45:50,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:45:50,642 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 06:45:50,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:45:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1855999238, now seen corresponding path program 1 times [2024-12-02 06:45:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:45:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580230042] [2024-12-02 06:45:50,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:45:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:45:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:45:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:45:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:45:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580230042] [2024-12-02 06:45:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580230042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:45:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:45:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:45:50,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462083837] [2024-12-02 06:45:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:45:50,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:45:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:45:50,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:45:50,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:45:50,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-12-02 06:45:50,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 124 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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) [2024-12-02 06:45:50,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:45:50,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-12-02 06:45:50,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:46:22,740 INFO L124 PetriNetUnfolderBase]: 245815/386122 cut-off events. [2024-12-02 06:46:22,740 INFO L125 PetriNetUnfolderBase]: For 21761/21761 co-relation queries the response was YES. [2024-12-02 06:46:23,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746486 conditions, 386122 events. 245815/386122 cut-off events. For 21761/21761 co-relation queries the response was YES. Maximal size of possible extension queue 6240. Compared 3710889 event pairs, 23086 based on Foata normal form. 5202/373419 useless extension candidates. Maximal degree in co-relation 43998. Up to 243970 conditions per place. [2024-12-02 06:46:25,123 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 197 selfloop transitions, 6 changer transitions 0/252 dead transitions. [2024-12-02 06:46:25,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 252 transitions, 955 flow [2024-12-02 06:46:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:46:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:46:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 498 transitions. [2024-12-02 06:46:25,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5845070422535211 [2024-12-02 06:46:25,127 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 295 flow. Second operand 6 states and 498 transitions. [2024-12-02 06:46:25,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 252 transitions, 955 flow [2024-12-02 06:46:25,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 252 transitions, 953 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:46:25,138 INFO L231 Difference]: Finished difference. Result has 134 places, 123 transitions, 301 flow [2024-12-02 06:46:25,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=134, PETRI_TRANSITIONS=123} [2024-12-02 06:46:25,139 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 8 predicate places. [2024-12-02 06:46:25,139 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 123 transitions, 301 flow [2024-12-02 06:46:25,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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) [2024-12-02 06:46:25,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:46:25,140 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-12-02 06:46:25,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:46:25,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 06:46:25,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:46:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1701400885, now seen corresponding path program 1 times [2024-12-02 06:46:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:46:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887683580] [2024-12-02 06:46:25,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:46:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:46:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:46:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:46:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:46:25,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887683580] [2024-12-02 06:46:25,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887683580] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:46:25,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:46:25,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:46:25,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063727411] [2024-12-02 06:46:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:46:25,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:46:25,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:46:25,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:46:25,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:46:25,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-12-02 06:46:25,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 123 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-12-02 06:46:25,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:46:25,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-12-02 06:46:25,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:46:55,736 INFO L124 PetriNetUnfolderBase]: 231399/354411 cut-off events. [2024-12-02 06:46:55,736 INFO L125 PetriNetUnfolderBase]: For 44292/44292 co-relation queries the response was YES. [2024-12-02 06:46:56,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705596 conditions, 354411 events. 231399/354411 cut-off events. For 44292/44292 co-relation queries the response was YES. Maximal size of possible extension queue 5716. Compared 3226180 event pairs, 37727 based on Foata normal form. 5202/350505 useless extension candidates. Maximal degree in co-relation 190726. Up to 263621 conditions per place. [2024-12-02 06:46:57,839 INFO L140 encePairwiseOnDemand]: 137/142 looper letters, 164 selfloop transitions, 6 changer transitions 0/219 dead transitions. [2024-12-02 06:46:57,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 219 transitions, 831 flow [2024-12-02 06:46:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:46:57,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 06:46:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2024-12-02 06:46:57,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6426056338028169 [2024-12-02 06:46:57,842 INFO L175 Difference]: Start difference. First operand has 134 places, 123 transitions, 301 flow. Second operand 4 states and 365 transitions. [2024-12-02 06:46:57,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 219 transitions, 831 flow [2024-12-02 06:46:59,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 219 transitions, 815 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-12-02 06:46:59,320 INFO L231 Difference]: Finished difference. Result has 132 places, 123 transitions, 301 flow [2024-12-02 06:46:59,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=132, PETRI_TRANSITIONS=123} [2024-12-02 06:46:59,321 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 6 predicate places. [2024-12-02 06:46:59,321 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 123 transitions, 301 flow [2024-12-02 06:46:59,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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) [2024-12-02 06:46:59,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:46:59,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:46:59,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:46:59,322 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 06:46:59,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:46:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 147192436, now seen corresponding path program 1 times [2024-12-02 06:46:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:46:59,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664815299] [2024-12-02 06:46:59,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:46:59,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:46:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:46:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:46:59,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:46:59,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664815299] [2024-12-02 06:46:59,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664815299] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:46:59,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:46:59,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:46:59,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695091581] [2024-12-02 06:46:59,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:46:59,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:46:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:46:59,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:46:59,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:46:59,392 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 142 [2024-12-02 06:46:59,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 123 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-12-02 06:46:59,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:46:59,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 142 [2024-12-02 06:46:59,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:47:42,723 INFO L124 PetriNetUnfolderBase]: 329068/559254 cut-off events. [2024-12-02 06:47:42,723 INFO L125 PetriNetUnfolderBase]: For 51966/51966 co-relation queries the response was YES. [2024-12-02 06:47:43,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040136 conditions, 559254 events. 329068/559254 cut-off events. For 51966/51966 co-relation queries the response was YES. Maximal size of possible extension queue 9628. Compared 6087061 event pairs, 112923 based on Foata normal form. 6103/529824 useless extension candidates. Maximal degree in co-relation 502631. Up to 290791 conditions per place. [2024-12-02 06:47:45,809 INFO L140 encePairwiseOnDemand]: 131/142 looper letters, 233 selfloop transitions, 16 changer transitions 0/298 dead transitions. [2024-12-02 06:47:45,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 298 transitions, 1238 flow [2024-12-02 06:47:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:47:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 06:47:45,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 499 transitions. [2024-12-02 06:47:45,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7028169014084507 [2024-12-02 06:47:45,811 INFO L175 Difference]: Start difference. First operand has 132 places, 123 transitions, 301 flow. Second operand 5 states and 499 transitions. [2024-12-02 06:47:45,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 298 transitions, 1238 flow [2024-12-02 06:47:45,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 298 transitions, 1222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 06:47:45,854 INFO L231 Difference]: Finished difference. Result has 138 places, 138 transitions, 421 flow [2024-12-02 06:47:45,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=421, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2024-12-02 06:47:45,854 INFO L279 CegarLoopForPetriNet]: 126 programPoint places, 12 predicate places. [2024-12-02 06:47:45,854 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 421 flow [2024-12-02 06:47:45,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-12-02 06:47:45,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:47:45,855 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2024-12-02 06:47:45,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:47:45,855 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-12-02 06:47:45,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:47:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1136217791, now seen corresponding path program 1 times [2024-12-02 06:47:45,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:47:45,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480207785] [2024-12-02 06:47:45,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:47:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:47:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:47:45,874 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 06:47:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:47:45,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 06:47:45,894 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-12-02 06:47:45,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-12-02 06:47:45,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-12-02 06:47:45,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:47:45,895 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-12-02 06:47:45,896 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 06:47:45,896 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 06:47:45,931 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 06:47:45,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 179 transitions, 398 flow [2024-12-02 06:47:45,973 INFO L124 PetriNetUnfolderBase]: 55/390 cut-off events. [2024-12-02 06:47:45,973 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-12-02 06:47:45,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 390 events. 55/390 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1802 event pairs, 6 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 284. Up to 32 conditions per place. [2024-12-02 06:47:45,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 179 transitions, 398 flow [2024-12-02 06:47:45,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 179 transitions, 398 flow [2024-12-02 06:47:45,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:47:45,981 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;@28a05a61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:47:45,981 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-12-02 06:47:45,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:47:45,982 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-12-02 06:47:45,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:47:45,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:47:45,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 06:47:45,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-12-02 06:47:45,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:47:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash 793586012, now seen corresponding path program 1 times [2024-12-02 06:47:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:47:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148805244] [2024-12-02 06:47:45,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:47:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:47:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:47:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:47:46,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:47:46,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148805244] [2024-12-02 06:47:46,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148805244] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:47:46,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:47:46,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:47:46,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874907334] [2024-12-02 06:47:46,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:47:46,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:47:46,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:47:46,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:47:46,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:47:46,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 179 [2024-12-02 06:47:46,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 179 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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) [2024-12-02 06:47:46,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:47:46,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 179 [2024-12-02 06:47:46,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand