./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --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_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/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_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/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_936a07e7-db96-45ed-b59b-c4d31a6421ff/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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:35:44,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:35:44,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 07:35:44,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:35:44,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:35:44,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:35:44,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:35:44,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:35:44,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:35:44,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:35:44,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:35:44,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:35:44,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:35:44,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:35:44,582 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:35:44,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 07:35:44,583 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:35:44,584 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:35:44,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:35:44,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:35:44,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:35:44,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:35:44,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:35:44,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:35:44,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:35:44,585 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:35:44,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:35:44,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:35:44,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:35:44,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:35:44,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:35:44,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:35:44,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:35:44,586 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_936a07e7-db96-45ed-b59b-c4d31a6421ff/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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-12-02 07:35:44,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:35:44,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:35:44,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:35:44,851 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:35:44,851 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:35:44,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-12-02 07:35:47,527 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/data/72262dca0/c07d6ab03303415dab04b2dd2167240b/FLAGaba4e80f6 [2024-12-02 07:35:47,726 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:35:47,727 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-12-02 07:35:47,735 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/data/72262dca0/c07d6ab03303415dab04b2dd2167240b/FLAGaba4e80f6 [2024-12-02 07:35:47,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/data/72262dca0/c07d6ab03303415dab04b2dd2167240b [2024-12-02 07:35:47,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:35:47,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:35:47,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:35:47,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:35:47,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:35:47,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:35:47" (1/1) ... [2024-12-02 07:35:47,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49103153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:47, skipping insertion in model container [2024-12-02 07:35:47,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:35:47" (1/1) ... [2024-12-02 07:35:47,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:35:47,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:35:47,958 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:35:47,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:35:48,001 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:35:48,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48 WrapperNode [2024-12-02 07:35:48,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:35:48,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:35:48,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:35:48,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:35:48,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,040 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 338 [2024-12-02 07:35:48,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:35:48,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:35:48,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:35:48,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:35:48,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,068 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-12-02 07:35:48,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,076 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:35:48,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:35:48,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:35:48,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:35:48,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (1/1) ... [2024-12-02 07:35:48,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:35:48,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:48,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:35:48,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:35:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:35:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:35:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:35:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:35:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:35:48,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 07:35:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 07:35:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 07:35:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 07:35:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:35:48,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:35:48,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:35:48,146 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 07:35:48,250 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:35:48,251 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:35:48,699 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 07:35:48,700 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:35:49,235 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:35:49,236 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 07:35:49,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:35:49 BoogieIcfgContainer [2024-12-02 07:35:49,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:35:49,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:35:49,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:35:49,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:35:49,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:35:47" (1/3) ... [2024-12-02 07:35:49,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59747ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:35:49, skipping insertion in model container [2024-12-02 07:35:49,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:35:48" (2/3) ... [2024-12-02 07:35:49,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59747ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:35:49, skipping insertion in model container [2024-12-02 07:35:49,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:35:49" (3/3) ... [2024-12-02 07:35:49,245 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-12-02 07:35:49,262 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:35:49,264 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 77 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2024-12-02 07:35:49,264 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 07:35:49,413 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 07:35:49,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-12-02 07:35:49,495 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-12-02 07:35:49,497 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 07:35:49,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 280 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-12-02 07:35:49,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-12-02 07:35:49,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-12-02 07:35:49,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:35:49,523 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;@bd26ac0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:35:49,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-12-02 07:35:49,528 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:35:49,528 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 07:35:49,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 07:35:49,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:35:49,529 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 07:35:49,529 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:35:49,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1076866, now seen corresponding path program 1 times [2024-12-02 07:35:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906231349] [2024-12-02 07:35:49,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:49,782 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 07:35:49,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:49,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906231349] [2024-12-02 07:35:49,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906231349] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:49,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:35:49,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:35:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079810672] [2024-12-02 07:35:49,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:49,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:35:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:49,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:35:49,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:35:49,834 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 07:35:49,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 07:35:49,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:35:49,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 07:35:49,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:35:56,322 INFO L124 PetriNetUnfolderBase]: 50181/66653 cut-off events. [2024-12-02 07:35:56,322 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2024-12-02 07:35:56,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130942 conditions, 66653 events. 50181/66653 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 6958. Compared 482779 event pairs, 36482 based on Foata normal form. 2/28918 useless extension candidates. Maximal degree in co-relation 124360. Up to 62109 conditions per place. [2024-12-02 07:35:56,765 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-12-02 07:35:56,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2024-12-02 07:35:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:35:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 07:35:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-12-02 07:35:56,779 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-12-02 07:35:56,781 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-12-02 07:35:56,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2024-12-02 07:35:57,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 07:35:57,287 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2024-12-02 07:35:57,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-12-02 07:35:57,293 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-12-02 07:35:57,293 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2024-12-02 07:35:57,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 07:35:57,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:35:57,293 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 07:35:57,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:35:57,294 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:35:57,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:35:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2017222722, now seen corresponding path program 1 times [2024-12-02 07:35:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:35:57,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579952053] [2024-12-02 07:35:57,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:35:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:35:57,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:35:57,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579952053] [2024-12-02 07:35:57,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579952053] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:35:57,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892448826] [2024-12-02 07:35:57,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:35:57,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:35:57,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:35:57,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:35:57,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:35:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:35:57,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 07:35:57,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:35:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:35:57,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:35:57,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892448826] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:35:57,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:35:57,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 07:35:57,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99831821] [2024-12-02 07:35:57,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:35:57,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:35:57,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:35:57,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:35:57,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:35:57,642 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 07:35:57,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 07:35:57,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:35:57,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 07:35:57,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:03,422 INFO L124 PetriNetUnfolderBase]: 50181/66651 cut-off events. [2024-12-02 07:36:03,422 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-12-02 07:36:03,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130158 conditions, 66651 events. 50181/66651 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 483079 event pairs, 36482 based on Foata normal form. 2/28919 useless extension candidates. Maximal degree in co-relation 130108. Up to 62099 conditions per place. [2024-12-02 07:36:03,758 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-12-02 07:36:03,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2024-12-02 07:36:03,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:36:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 07:36:03,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-12-02 07:36:03,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-12-02 07:36:03,761 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2024-12-02 07:36:03,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2024-12-02 07:36:03,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:36:03,763 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2024-12-02 07:36:03,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-12-02 07:36:03,763 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-12-02 07:36:03,764 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2024-12-02 07:36:03,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 07:36:03,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:03,764 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 07:36:03,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:36:03,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:36:03,965 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:03,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1890603972, now seen corresponding path program 1 times [2024-12-02 07:36:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307025022] [2024-12-02 07:36:03,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:04,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:04,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307025022] [2024-12-02 07:36:04,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307025022] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:36:04,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586893722] [2024-12-02 07:36:04,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:04,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:36:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:36:04,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:36:04,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:36:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:04,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 07:36:04,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:36:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:04,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:36:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:36:04,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586893722] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:36:04,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:36:04,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 07:36:04,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896158881] [2024-12-02 07:36:04,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:36:04,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 07:36:04,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:04,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 07:36:04,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:36:04,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 07:36:04,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 07:36:04,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:04,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 07:36:04,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:09,872 INFO L124 PetriNetUnfolderBase]: 50187/66675 cut-off events. [2024-12-02 07:36:09,873 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-12-02 07:36:09,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130252 conditions, 66675 events. 50187/66675 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 482875 event pairs, 36482 based on Foata normal form. 6/29097 useless extension candidates. Maximal degree in co-relation 130110. Up to 62110 conditions per place. [2024-12-02 07:36:10,135 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 49 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-12-02 07:36:10,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 486 flow [2024-12-02 07:36:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:36:10,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 07:36:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-12-02 07:36:10,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-12-02 07:36:10,138 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 224 flow. Second operand 10 states and 300 transitions. [2024-12-02 07:36:10,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 486 flow [2024-12-02 07:36:10,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-12-02 07:36:10,141 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 364 flow [2024-12-02 07:36:10,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-12-02 07:36:10,142 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-12-02 07:36:10,142 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 364 flow [2024-12-02 07:36:10,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 07:36:10,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:10,143 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:10,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:36:10,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:36:10,343 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:10,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1263953769, now seen corresponding path program 1 times [2024-12-02 07:36:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053562833] [2024-12-02 07:36:10,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:10,418 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 07:36:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053562833] [2024-12-02 07:36:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053562833] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:10,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:36:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202952423] [2024-12-02 07:36:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:10,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:10,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:10,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:10,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:10,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:36:10,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:10,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:10,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:16,301 INFO L124 PetriNetUnfolderBase]: 53011/71517 cut-off events. [2024-12-02 07:36:16,301 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-12-02 07:36:16,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140635 conditions, 71517 events. 53011/71517 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 6873. Compared 536562 event pairs, 9386 based on Foata normal form. 0/33650 useless extension candidates. Maximal degree in co-relation 140568. Up to 52310 conditions per place. [2024-12-02 07:36:16,598 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 105 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-12-02 07:36:16,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 655 flow [2024-12-02 07:36:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:36:16,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-12-02 07:36:16,600 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2024-12-02 07:36:16,600 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 364 flow. Second operand 3 states and 163 transitions. [2024-12-02 07:36:16,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 655 flow [2024-12-02 07:36:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 127 transitions, 631 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-12-02 07:36:16,603 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 354 flow [2024-12-02 07:36:16,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-12-02 07:36:16,603 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2024-12-02 07:36:16,603 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 354 flow [2024-12-02 07:36:16,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 07:36:16,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:16,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:16,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:36:16,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:16,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash 527862338, now seen corresponding path program 1 times [2024-12-02 07:36:16,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:16,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156573002] [2024-12-02 07:36:16,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:16,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:16,667 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 07:36:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156573002] [2024-12-02 07:36:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156573002] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:36:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511503724] [2024-12-02 07:36:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:16,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:16,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:16,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:16,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:16,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 07:36:16,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:16,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:16,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:23,583 INFO L124 PetriNetUnfolderBase]: 60063/77809 cut-off events. [2024-12-02 07:36:23,583 INFO L125 PetriNetUnfolderBase]: For 4297/4297 co-relation queries the response was YES. [2024-12-02 07:36:23,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160600 conditions, 77809 events. 60063/77809 cut-off events. For 4297/4297 co-relation queries the response was YES. Maximal size of possible extension queue 6146. Compared 491033 event pairs, 7988 based on Foata normal form. 0/35998 useless extension candidates. Maximal degree in co-relation 160534. Up to 70051 conditions per place. [2024-12-02 07:36:23,918 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 100 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2024-12-02 07:36:23,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 646 flow [2024-12-02 07:36:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:36:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-12-02 07:36:23,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6544715447154471 [2024-12-02 07:36:23,920 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 354 flow. Second operand 3 states and 161 transitions. [2024-12-02 07:36:23,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 646 flow [2024-12-02 07:36:23,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 127 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:36:23,925 INFO L231 Difference]: Finished difference. Result has 88 places, 99 transitions, 401 flow [2024-12-02 07:36:23,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=88, PETRI_TRANSITIONS=99} [2024-12-02 07:36:23,926 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2024-12-02 07:36:23,926 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 99 transitions, 401 flow [2024-12-02 07:36:23,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 07:36:23,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:23,927 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:23,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:36:23,927 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:23,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:23,927 INFO L85 PathProgramCache]: Analyzing trace with hash 527862339, now seen corresponding path program 1 times [2024-12-02 07:36:23,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:23,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272210808] [2024-12-02 07:36:23,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:23,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:24,179 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 07:36:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272210808] [2024-12-02 07:36:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272210808] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:24,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:24,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:36:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580562035] [2024-12-02 07:36:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:24,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:36:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:24,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:36:24,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:36:24,180 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:24,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 07:36:24,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:24,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:24,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:30,639 INFO L124 PetriNetUnfolderBase]: 54993/72829 cut-off events. [2024-12-02 07:36:30,639 INFO L125 PetriNetUnfolderBase]: For 10083/10083 co-relation queries the response was YES. [2024-12-02 07:36:30,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166627 conditions, 72829 events. 54993/72829 cut-off events. For 10083/10083 co-relation queries the response was YES. Maximal size of possible extension queue 5913. Compared 536807 event pairs, 40505 based on Foata normal form. 787/33885 useless extension candidates. Maximal degree in co-relation 166533. Up to 65482 conditions per place. [2024-12-02 07:36:31,003 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 118 selfloop transitions, 5 changer transitions 0/143 dead transitions. [2024-12-02 07:36:31,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 143 transitions, 806 flow [2024-12-02 07:36:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:36:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 07:36:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 222 transitions. [2024-12-02 07:36:31,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5414634146341464 [2024-12-02 07:36:31,004 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 401 flow. Second operand 5 states and 222 transitions. [2024-12-02 07:36:31,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 143 transitions, 806 flow [2024-12-02 07:36:31,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 143 transitions, 806 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:36:31,053 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 446 flow [2024-12-02 07:36:31,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-12-02 07:36:31,054 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2024-12-02 07:36:31,054 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 446 flow [2024-12-02 07:36:31,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 07:36:31,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:31,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:31,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:36:31,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:31,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:31,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1757662626, now seen corresponding path program 1 times [2024-12-02 07:36:31,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:31,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547843287] [2024-12-02 07:36:31,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:31,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:31,096 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 07:36:31,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547843287] [2024-12-02 07:36:31,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547843287] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:31,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:36:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453249345] [2024-12-02 07:36:31,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:31,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:31,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:31,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:31,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:31,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:36:31,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:31,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:31,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:36,582 INFO L124 PetriNetUnfolderBase]: 48531/66070 cut-off events. [2024-12-02 07:36:36,582 INFO L125 PetriNetUnfolderBase]: For 9729/9729 co-relation queries the response was YES. [2024-12-02 07:36:36,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152623 conditions, 66070 events. 48531/66070 cut-off events. For 9729/9729 co-relation queries the response was YES. Maximal size of possible extension queue 5566. Compared 501962 event pairs, 36342 based on Foata normal form. 0/32422 useless extension candidates. Maximal degree in co-relation 152526. Up to 61464 conditions per place. [2024-12-02 07:36:36,903 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 79 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2024-12-02 07:36:36,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 100 transitions, 604 flow [2024-12-02 07:36:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:36:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-12-02 07:36:36,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.508130081300813 [2024-12-02 07:36:36,904 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 446 flow. Second operand 3 states and 125 transitions. [2024-12-02 07:36:36,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 100 transitions, 604 flow [2024-12-02 07:36:36,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 600 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 07:36:36,955 INFO L231 Difference]: Finished difference. Result has 94 places, 100 transitions, 442 flow [2024-12-02 07:36:36,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=94, PETRI_TRANSITIONS=100} [2024-12-02 07:36:36,956 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2024-12-02 07:36:36,956 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 100 transitions, 442 flow [2024-12-02 07:36:36,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:36:36,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:36,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:36,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:36:36,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:36,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1757662627, now seen corresponding path program 1 times [2024-12-02 07:36:36,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:36,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702170744] [2024-12-02 07:36:36,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:36,996 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 07:36:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702170744] [2024-12-02 07:36:36,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702170744] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:36,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:36,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:36:36,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394857117] [2024-12-02 07:36:36,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:36,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:36,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:36,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:36,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:36,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:36,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 100 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:36:36,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:36,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:36,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:41,617 INFO L124 PetriNetUnfolderBase]: 42379/58085 cut-off events. [2024-12-02 07:36:41,617 INFO L125 PetriNetUnfolderBase]: For 8699/8699 co-relation queries the response was YES. [2024-12-02 07:36:41,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134340 conditions, 58085 events. 42379/58085 cut-off events. For 8699/8699 co-relation queries the response was YES. Maximal size of possible extension queue 4931. Compared 442317 event pairs, 32179 based on Foata normal form. 0/29695 useless extension candidates. Maximal degree in co-relation 134321. Up to 53875 conditions per place. [2024-12-02 07:36:41,978 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 73 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2024-12-02 07:36:41,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 598 flow [2024-12-02 07:36:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:36:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-12-02 07:36:41,979 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-12-02 07:36:41,979 INFO L175 Difference]: Start difference. First operand has 94 places, 100 transitions, 442 flow. Second operand 3 states and 124 transitions. [2024-12-02 07:36:41,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 598 flow [2024-12-02 07:36:42,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 587 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 07:36:42,046 INFO L231 Difference]: Finished difference. Result has 93 places, 99 transitions, 441 flow [2024-12-02 07:36:42,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=93, PETRI_TRANSITIONS=99} [2024-12-02 07:36:42,046 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2024-12-02 07:36:42,046 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 99 transitions, 441 flow [2024-12-02 07:36:42,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:36:42,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:42,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:42,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:36:42,047 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:42,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1757662628, now seen corresponding path program 1 times [2024-12-02 07:36:42,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:42,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717923316] [2024-12-02 07:36:42,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:42,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:42,084 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 07:36:42,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:42,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717923316] [2024-12-02 07:36:42,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717923316] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:42,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:42,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:36:42,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654121365] [2024-12-02 07:36:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:42,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:42,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:42,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:42,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:42,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 99 transitions, 441 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:36:42,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:42,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:42,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:48,548 INFO L124 PetriNetUnfolderBase]: 43061/60078 cut-off events. [2024-12-02 07:36:48,548 INFO L125 PetriNetUnfolderBase]: For 10610/10610 co-relation queries the response was YES. [2024-12-02 07:36:48,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141718 conditions, 60078 events. 43061/60078 cut-off events. For 10610/10610 co-relation queries the response was YES. Maximal size of possible extension queue 5119. Compared 477836 event pairs, 7201 based on Foata normal form. 0/33252 useless extension candidates. Maximal degree in co-relation 141700. Up to 44871 conditions per place. [2024-12-02 07:36:48,960 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 115 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2024-12-02 07:36:48,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 137 transitions, 816 flow [2024-12-02 07:36:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:36:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-12-02 07:36:48,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2024-12-02 07:36:48,961 INFO L175 Difference]: Start difference. First operand has 93 places, 99 transitions, 441 flow. Second operand 3 states and 155 transitions. [2024-12-02 07:36:48,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 137 transitions, 816 flow [2024-12-02 07:36:49,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:36:49,027 INFO L231 Difference]: Finished difference. Result has 95 places, 100 transitions, 449 flow [2024-12-02 07:36:49,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=95, PETRI_TRANSITIONS=100} [2024-12-02 07:36:49,027 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 12 predicate places. [2024-12-02 07:36:49,027 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 449 flow [2024-12-02 07:36:49,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:36:49,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:49,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:49,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:36:49,028 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:49,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1347032204, now seen corresponding path program 1 times [2024-12-02 07:36:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:49,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684467413] [2024-12-02 07:36:49,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:49,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:49,086 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 07:36:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684467413] [2024-12-02 07:36:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684467413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:49,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:36:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646398830] [2024-12-02 07:36:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:49,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:36:49,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:49,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:36:49,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:36:49,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:49,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 07:36:49,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:49,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:36:55,631 INFO L124 PetriNetUnfolderBase]: 48332/64708 cut-off events. [2024-12-02 07:36:55,632 INFO L125 PetriNetUnfolderBase]: For 13210/13210 co-relation queries the response was YES. [2024-12-02 07:36:55,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155934 conditions, 64708 events. 48332/64708 cut-off events. For 13210/13210 co-relation queries the response was YES. Maximal size of possible extension queue 4657. Compared 429129 event pairs, 6949 based on Foata normal form. 0/34311 useless extension candidates. Maximal degree in co-relation 155914. Up to 57072 conditions per place. [2024-12-02 07:36:55,950 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 110 selfloop transitions, 7 changer transitions 0/137 dead transitions. [2024-12-02 07:36:55,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 137 transitions, 825 flow [2024-12-02 07:36:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:36:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:36:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-12-02 07:36:55,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-12-02 07:36:55,951 INFO L175 Difference]: Start difference. First operand has 95 places, 100 transitions, 449 flow. Second operand 3 states and 153 transitions. [2024-12-02 07:36:55,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 137 transitions, 825 flow [2024-12-02 07:36:55,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 822 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:36:55,966 INFO L231 Difference]: Finished difference. Result has 96 places, 106 transitions, 496 flow [2024-12-02 07:36:55,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=496, PETRI_PLACES=96, PETRI_TRANSITIONS=106} [2024-12-02 07:36:55,966 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 13 predicate places. [2024-12-02 07:36:55,966 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 106 transitions, 496 flow [2024-12-02 07:36:55,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 07:36:55,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:36:55,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:36:55,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:36:55,967 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:36:55,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:36:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1347032203, now seen corresponding path program 1 times [2024-12-02 07:36:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:36:55,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882687935] [2024-12-02 07:36:55,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:36:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:36:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:36:56,038 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 07:36:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:36:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882687935] [2024-12-02 07:36:56,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882687935] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:36:56,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:36:56,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:36:56,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135556516] [2024-12-02 07:36:56,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:36:56,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:36:56,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:36:56,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:36:56,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:36:56,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:36:56,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 106 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 07:36:56,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:36:56,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:36:56,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:37:01,771 INFO L124 PetriNetUnfolderBase]: 43931/61125 cut-off events. [2024-12-02 07:37:01,772 INFO L125 PetriNetUnfolderBase]: For 18709/18709 co-relation queries the response was YES. [2024-12-02 07:37:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163513 conditions, 61125 events. 43931/61125 cut-off events. For 18709/18709 co-relation queries the response was YES. Maximal size of possible extension queue 4534. Compared 483448 event pairs, 34415 based on Foata normal form. 636/34216 useless extension candidates. Maximal degree in co-relation 163493. Up to 53700 conditions per place. [2024-12-02 07:37:02,120 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 110 selfloop transitions, 8 changer transitions 2/140 dead transitions. [2024-12-02 07:37:02,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 140 transitions, 871 flow [2024-12-02 07:37:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:37:02,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 07:37:02,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-12-02 07:37:02,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-12-02 07:37:02,122 INFO L175 Difference]: Start difference. First operand has 96 places, 106 transitions, 496 flow. Second operand 4 states and 184 transitions. [2024-12-02 07:37:02,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 140 transitions, 871 flow [2024-12-02 07:37:02,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 140 transitions, 871 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:37:02,200 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 518 flow [2024-12-02 07:37:02,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=518, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-12-02 07:37:02,200 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2024-12-02 07:37:02,200 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 518 flow [2024-12-02 07:37:02,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 07:37:02,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:37:02,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:37:02,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:37:02,201 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:37:02,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -170513405, now seen corresponding path program 1 times [2024-12-02 07:37:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770838083] [2024-12-02 07:37:02,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:02,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:02,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770838083] [2024-12-02 07:37:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770838083] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499228164] [2024-12-02 07:37:02,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:02,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:02,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:02,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:37:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:02,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:37:02,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:37:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:02,460 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:37:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499228164] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:37:02,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:37:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-12-02 07:37:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730560337] [2024-12-02 07:37:02,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:37:02,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:37:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:02,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:37:02,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:37:02,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:37:02,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 07:37:02,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:37:02,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:37:02,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:37:08,647 INFO L124 PetriNetUnfolderBase]: 40151/53754 cut-off events. [2024-12-02 07:37:08,647 INFO L125 PetriNetUnfolderBase]: For 17635/17635 co-relation queries the response was YES. [2024-12-02 07:37:08,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147597 conditions, 53754 events. 40151/53754 cut-off events. For 17635/17635 co-relation queries the response was YES. Maximal size of possible extension queue 3576. Compared 363210 event pairs, 17322 based on Foata normal form. 0/29854 useless extension candidates. Maximal degree in co-relation 147575. Up to 31911 conditions per place. [2024-12-02 07:37:09,097 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 109 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2024-12-02 07:37:09,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 878 flow [2024-12-02 07:37:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:37:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 07:37:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2024-12-02 07:37:09,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5335365853658537 [2024-12-02 07:37:09,099 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 518 flow. Second operand 4 states and 175 transitions. [2024-12-02 07:37:09,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 878 flow [2024-12-02 07:37:09,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:37:09,145 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 512 flow [2024-12-02 07:37:09,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=512, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2024-12-02 07:37:09,146 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2024-12-02 07:37:09,146 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 512 flow [2024-12-02 07:37:09,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 07:37:09,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:37:09,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:37:09,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:37:09,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:09,347 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:37:09,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash -236587914, now seen corresponding path program 1 times [2024-12-02 07:37:09,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:09,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560287737] [2024-12-02 07:37:09,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:09,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:37:09,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:09,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560287737] [2024-12-02 07:37:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560287737] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204221492] [2024-12-02 07:37:09,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:09,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:09,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:09,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:37:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:09,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:37:09,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:37:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:09,688 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:37:09,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204221492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:37:09,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:37:09,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-12-02 07:37:09,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581175141] [2024-12-02 07:37:09,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:37:09,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:37:09,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:09,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:37:09,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:37:09,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:37:09,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 07:37:09,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:37:09,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:37:09,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:37:14,008 INFO L124 PetriNetUnfolderBase]: 31595/42945 cut-off events. [2024-12-02 07:37:14,009 INFO L125 PetriNetUnfolderBase]: For 20763/20763 co-relation queries the response was YES. [2024-12-02 07:37:14,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122634 conditions, 42945 events. 31595/42945 cut-off events. For 20763/20763 co-relation queries the response was YES. Maximal size of possible extension queue 2630. Compared 289852 event pairs, 13045 based on Foata normal form. 0/24354 useless extension candidates. Maximal degree in co-relation 122611. Up to 23736 conditions per place. [2024-12-02 07:37:14,279 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 102 selfloop transitions, 7 changer transitions 0/129 dead transitions. [2024-12-02 07:37:14,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 129 transitions, 855 flow [2024-12-02 07:37:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:37:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 07:37:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-12-02 07:37:14,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5182926829268293 [2024-12-02 07:37:14,281 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 512 flow. Second operand 4 states and 170 transitions. [2024-12-02 07:37:14,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 129 transitions, 855 flow [2024-12-02 07:37:14,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 829 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 07:37:14,302 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 499 flow [2024-12-02 07:37:14,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=499, PETRI_PLACES=98, PETRI_TRANSITIONS=99} [2024-12-02 07:37:14,302 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2024-12-02 07:37:14,302 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 499 flow [2024-12-02 07:37:14,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 07:37:14,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:37:14,303 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:37:14,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:37:14,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:14,503 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:37:14,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1579295138, now seen corresponding path program 1 times [2024-12-02 07:37:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:14,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953502153] [2024-12-02 07:37:14,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:14,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:14,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953502153] [2024-12-02 07:37:14,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953502153] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:37:14,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:37:14,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:37:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773833199] [2024-12-02 07:37:14,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:37:14,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:37:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:14,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:37:14,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:37:14,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:37:14,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 99 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 07:37:14,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:37:14,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:37:14,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:37:17,913 INFO L124 PetriNetUnfolderBase]: 24636/33864 cut-off events. [2024-12-02 07:37:17,913 INFO L125 PetriNetUnfolderBase]: For 16845/16845 co-relation queries the response was YES. [2024-12-02 07:37:18,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93309 conditions, 33864 events. 24636/33864 cut-off events. For 16845/16845 co-relation queries the response was YES. Maximal size of possible extension queue 2164. Compared 220775 event pairs, 6250 based on Foata normal form. 420/20940 useless extension candidates. Maximal degree in co-relation 93286. Up to 25784 conditions per place. [2024-12-02 07:37:18,110 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 102 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2024-12-02 07:37:18,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 124 transitions, 799 flow [2024-12-02 07:37:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:37:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:37:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-12-02 07:37:18,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-12-02 07:37:18,111 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 499 flow. Second operand 3 states and 148 transitions. [2024-12-02 07:37:18,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 124 transitions, 799 flow [2024-12-02 07:37:18,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 772 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 07:37:18,166 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 463 flow [2024-12-02 07:37:18,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2024-12-02 07:37:18,167 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 14 predicate places. [2024-12-02 07:37:18,167 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 463 flow [2024-12-02 07:37:18,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 07:37:18,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:37:18,167 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:37:18,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:37:18,167 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:37:18,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1182588623, now seen corresponding path program 1 times [2024-12-02 07:37:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:18,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572983711] [2024-12-02 07:37:18,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:18,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572983711] [2024-12-02 07:37:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572983711] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104496422] [2024-12-02 07:37:18,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:18,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:18,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:18,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:18,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:37:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:18,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:37:18,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:37:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:18,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:37:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:18,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104496422] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:37:18,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:37:18,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-12-02 07:37:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380396738] [2024-12-02 07:37:18,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:37:18,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:37:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:18,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:37:18,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:37:18,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:37:18,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 463 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 07:37:18,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:37:18,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:37:18,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:37:27,419 INFO L124 PetriNetUnfolderBase]: 62509/85267 cut-off events. [2024-12-02 07:37:27,420 INFO L125 PetriNetUnfolderBase]: For 28373/28373 co-relation queries the response was YES. [2024-12-02 07:37:27,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244736 conditions, 85267 events. 62509/85267 cut-off events. For 28373/28373 co-relation queries the response was YES. Maximal size of possible extension queue 3875. Compared 598745 event pairs, 3648 based on Foata normal form. 0/52147 useless extension candidates. Maximal degree in co-relation 244713. Up to 22553 conditions per place. [2024-12-02 07:37:28,042 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 239 selfloop transitions, 9 changer transitions 0/268 dead transitions. [2024-12-02 07:37:28,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 268 transitions, 1695 flow [2024-12-02 07:37:28,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:37:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 07:37:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 366 transitions. [2024-12-02 07:37:28,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6376306620209059 [2024-12-02 07:37:28,044 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 463 flow. Second operand 7 states and 366 transitions. [2024-12-02 07:37:28,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 268 transitions, 1695 flow [2024-12-02 07:37:28,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 268 transitions, 1693 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:37:28,070 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 520 flow [2024-12-02 07:37:28,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2024-12-02 07:37:28,070 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 22 predicate places. [2024-12-02 07:37:28,070 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 520 flow [2024-12-02 07:37:28,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 07:37:28,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:37:28,071 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:37:28,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:37:28,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 07:37:28,271 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:37:28,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1182588622, now seen corresponding path program 1 times [2024-12-02 07:37:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313205263] [2024-12-02 07:37:28,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:37:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:37:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:37:28,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:28,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313205263] [2024-12-02 07:37:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313205263] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:37:28,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:37:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:37:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394269382] [2024-12-02 07:37:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:37:28,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:37:28,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:28,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:37:28,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:37:28,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 07:37:28,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 07:37:28,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:37:28,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 07:37:28,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:37:36,297 INFO L124 PetriNetUnfolderBase]: 56045/77013 cut-off events. [2024-12-02 07:37:36,297 INFO L125 PetriNetUnfolderBase]: For 58914/58964 co-relation queries the response was YES. [2024-12-02 07:37:36,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230306 conditions, 77013 events. 56045/77013 cut-off events. For 58914/58964 co-relation queries the response was YES. Maximal size of possible extension queue 3584. Compared 534657 event pairs, 38678 based on Foata normal form. 1820/51651 useless extension candidates. Maximal degree in co-relation 230279. Up to 70795 conditions per place. [2024-12-02 07:37:36,752 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 75 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2024-12-02 07:37:36,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 645 flow [2024-12-02 07:37:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:37:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:37:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2024-12-02 07:37:36,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-12-02 07:37:36,753 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 520 flow. Second operand 3 states and 118 transitions. [2024-12-02 07:37:36,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 645 flow [2024-12-02 07:37:36,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 96 transitions, 637 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-12-02 07:37:36,790 INFO L231 Difference]: Finished difference. Result has 104 places, 96 transitions, 487 flow [2024-12-02 07:37:36,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=487, PETRI_PLACES=104, PETRI_TRANSITIONS=96} [2024-12-02 07:37:36,790 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2024-12-02 07:37:36,790 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 96 transitions, 487 flow [2024-12-02 07:37:36,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 07:37:36,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:37:36,790 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-12-02 07:37:36,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:37:36,791 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 07:37:36,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:37:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1267067396, now seen corresponding path program 2 times [2024-12-02 07:37:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:37:36,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641607150] [2024-12-02 07:37:36,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:37:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:37:36,800 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:37:36,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:37:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:37:36,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:37:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641607150] [2024-12-02 07:37:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641607150] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:37:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004413604] [2024-12-02 07:37:36,825 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:37:36,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:37:36,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:37:36,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:37:36,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_936a07e7-db96-45ed-b59b-c4d31a6421ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:37:36,904 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:37:36,904 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:37:36,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 07:37:36,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:37:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:37:36,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:37:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:37:36,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004413604] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:37:36,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:37:36,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 07:37:36,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377694818] [2024-12-02 07:37:36,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:37:36,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:37:36,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:37:36,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:37:36,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:37:36,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 07:37:36,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 96 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 07:37:36,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:37:36,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 07:37:36,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand