./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU --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 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:16,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:16,513 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:05:16,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:16,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:16,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:16,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:16,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:16,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:16,566 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:16,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:16,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:16,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:16,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:16,574 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:16,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:16,575 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:05:16,576 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:16,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:16,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:16,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:16,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:05:16,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:16,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:05:16,579 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:16,580 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:05:16,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:05:16,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:16,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:05:16,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:16,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:16,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:16,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:16,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:16,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:16,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:16,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:16,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:05:16,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:16,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:16,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:16,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:16,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:16,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:16,601 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48ddce9ee02b3ea4431cf137593b71facb450c3e223dbff4f116c3c0ac1377b5 [2024-10-31 22:05:16,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:16,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:16,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:16,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:16,933 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:16,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c Unable to find full path for "g++" [2024-10-31 22:05:19,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:19,291 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:19,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2024-10-31 22:05:19,308 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/data/fd671b707/b2715b304ac34de385de06ffc366872d/FLAGc747bb766 [2024-10-31 22:05:19,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/data/fd671b707/b2715b304ac34de385de06ffc366872d [2024-10-31 22:05:19,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:19,644 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:19,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:19,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:19,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:19,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:19" (1/1) ... [2024-10-31 22:05:19,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11700acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:19, skipping insertion in model container [2024-10-31 22:05:19,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:19" (1/1) ... [2024-10-31 22:05:19,688 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:19,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:19,972 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:20,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:20,038 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:20,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20 WrapperNode [2024-10-31 22:05:20,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:20,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:20,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:20,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:20,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,145 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 22, calls inlined = 30, statements flattened = 499 [2024-10-31 22:05:20,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:20,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:20,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:20,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:20,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,215 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 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]. [2024-10-31 22:05:20,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:20,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:20,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:20,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:20,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (1/1) ... [2024-10-31 22:05:20,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:20,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:20,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:20,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:05:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:05:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:05:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:05:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:05:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:05:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:05:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:05:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:05:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:20,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:05:20,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:05:20,331 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:05:20,507 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:20,510 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:21,523 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:05:21,524 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:22,174 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:22,175 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:05:22,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:22 BoogieIcfgContainer [2024-10-31 22:05:22,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:22,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:22,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:22,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:22,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:19" (1/3) ... [2024-10-31 22:05:22,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7137bb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:22, skipping insertion in model container [2024-10-31 22:05:22,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:20" (2/3) ... [2024-10-31 22:05:22,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7137bb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:22, skipping insertion in model container [2024-10-31 22:05:22,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:22" (3/3) ... [2024-10-31 22:05:22,187 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2024-10-31 22:05:22,207 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:22,208 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-10-31 22:05:22,208 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:05:22,347 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:05:22,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 169 transitions, 352 flow [2024-10-31 22:05:22,478 INFO L124 PetriNetUnfolderBase]: 26/167 cut-off events. [2024-10-31 22:05:22,478 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:05:22,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 26/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 829 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2024-10-31 22:05:22,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 169 transitions, 352 flow [2024-10-31 22:05:22,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 166 transitions, 344 flow [2024-10-31 22:05:22,508 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:22,516 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;@134e2f9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:22,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2024-10-31 22:05:22,520 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:05:22,520 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-31 22:05:22,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:05:22,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:22,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:05:22,522 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:22,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1512952, now seen corresponding path program 1 times [2024-10-31 22:05:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066184020] [2024-10-31 22:05:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:23,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:23,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066184020] [2024-10-31 22:05:23,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066184020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:23,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:23,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:23,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583254218] [2024-10-31 22:05:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:23,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:23,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:23,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:23,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-10-31 22:05:23,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:23,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:23,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:24,321 INFO L124 PetriNetUnfolderBase]: 2890/6519 cut-off events. [2024-10-31 22:05:24,321 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-31 22:05:24,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10784 conditions, 6519 events. 2890/6519 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 58856 event pairs, 1812 based on Foata normal form. 4/5189 useless extension candidates. Maximal degree in co-relation 10584. Up to 4183 conditions per place. [2024-10-31 22:05:24,370 INFO L140 encePairwiseOnDemand]: 154/169 looper letters, 79 selfloop transitions, 7 changer transitions 2/168 dead transitions. [2024-10-31 22:05:24,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 168 transitions, 522 flow [2024-10-31 22:05:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:24,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2024-10-31 22:05:24,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6316568047337278 [2024-10-31 22:05:24,393 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 344 flow. Second operand 4 states and 427 transitions. [2024-10-31 22:05:24,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 168 transitions, 522 flow [2024-10-31 22:05:24,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 168 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:05:24,407 INFO L231 Difference]: Finished difference. Result has 147 places, 166 transitions, 383 flow [2024-10-31 22:05:24,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=147, PETRI_TRANSITIONS=166} [2024-10-31 22:05:24,415 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 0 predicate places. [2024-10-31 22:05:24,416 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 166 transitions, 383 flow [2024-10-31 22:05:24,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2024-10-31 22:05:24,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:24,417 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:05:24,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:24,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:24,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2124182453, now seen corresponding path program 1 times [2024-10-31 22:05:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:24,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061674206] [2024-10-31 22:05:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061674206] [2024-10-31 22:05:24,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061674206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:24,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169867162] [2024-10-31 22:05:24,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:24,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:24,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:24,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:24,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:24,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:05:24,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:24,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169867162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:24,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:24,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-31 22:05:24,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467985856] [2024-10-31 22:05:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:24,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:24,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:05:24,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:24,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 166 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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) [2024-10-31 22:05:24,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:24,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:24,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:26,012 INFO L124 PetriNetUnfolderBase]: 2890/6515 cut-off events. [2024-10-31 22:05:26,012 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-31 22:05:26,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10750 conditions, 6515 events. 2890/6515 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 58786 event pairs, 1812 based on Foata normal form. 2/5186 useless extension candidates. Maximal degree in co-relation 10700. Up to 4172 conditions per place. [2024-10-31 22:05:26,062 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 72 selfloop transitions, 12 changer transitions 0/164 dead transitions. [2024-10-31 22:05:26,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 164 transitions, 543 flow [2024-10-31 22:05:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:05:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:05:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2024-10-31 22:05:26,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5759368836291914 [2024-10-31 22:05:26,070 INFO L175 Difference]: Start difference. First operand has 147 places, 166 transitions, 383 flow. Second operand 6 states and 584 transitions. [2024-10-31 22:05:26,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 164 transitions, 543 flow [2024-10-31 22:05:26,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 164 transitions, 543 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:05:26,076 INFO L231 Difference]: Finished difference. Result has 148 places, 164 transitions, 399 flow [2024-10-31 22:05:26,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=148, PETRI_TRANSITIONS=164} [2024-10-31 22:05:26,077 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 1 predicate places. [2024-10-31 22:05:26,078 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 164 transitions, 399 flow [2024-10-31 22:05:26,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 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) [2024-10-31 22:05:26,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:26,080 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-31 22:05:26,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:05:26,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:26,288 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:26,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:26,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1425148113, now seen corresponding path program 1 times [2024-10-31 22:05:26,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:26,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720038434] [2024-10-31 22:05:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:26,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:26,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:26,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720038434] [2024-10-31 22:05:26,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720038434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:26,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590851898] [2024-10-31 22:05:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:26,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:26,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:26,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:05:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:26,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:05:26,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:26,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590851898] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:26,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:05:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452178568] [2024-10-31 22:05:26,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:26,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:05:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:05:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:05:26,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:26,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 164 transitions, 399 flow. Second operand has 12 states, 12 states have (on average 84.08333333333333) internal successors, (1009), 12 states have internal predecessors, (1009), 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) [2024-10-31 22:05:26,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:26,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:26,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:27,868 INFO L124 PetriNetUnfolderBase]: 2896/6539 cut-off events. [2024-10-31 22:05:27,869 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-10-31 22:05:27,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 6539 events. 2896/6539 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 59093 event pairs, 1812 based on Foata normal form. 6/5213 useless extension candidates. Maximal degree in co-relation 10702. Up to 4183 conditions per place. [2024-10-31 22:05:27,916 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 77 selfloop transitions, 25 changer transitions 0/182 dead transitions. [2024-10-31 22:05:27,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 182 transitions, 717 flow [2024-10-31 22:05:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:05:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-31 22:05:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 938 transitions. [2024-10-31 22:05:27,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5550295857988166 [2024-10-31 22:05:27,919 INFO L175 Difference]: Start difference. First operand has 148 places, 164 transitions, 399 flow. Second operand 10 states and 938 transitions. [2024-10-31 22:05:27,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 182 transitions, 717 flow [2024-10-31 22:05:27,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 182 transitions, 659 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-31 22:05:27,925 INFO L231 Difference]: Finished difference. Result has 155 places, 182 transitions, 539 flow [2024-10-31 22:05:27,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=539, PETRI_PLACES=155, PETRI_TRANSITIONS=182} [2024-10-31 22:05:27,927 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-10-31 22:05:27,928 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 182 transitions, 539 flow [2024-10-31 22:05:27,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.08333333333333) internal successors, (1009), 12 states have internal predecessors, (1009), 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) [2024-10-31 22:05:27,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:27,929 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:27,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:05:28,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:28,130 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:28,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2088466662, now seen corresponding path program 1 times [2024-10-31 22:05:28,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:28,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816679483] [2024-10-31 22:05:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:28,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:28,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:28,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816679483] [2024-10-31 22:05:28,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816679483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:28,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:28,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555786762] [2024-10-31 22:05:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:28,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:28,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 169 [2024-10-31 22:05:28,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 182 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-10-31 22:05:28,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:28,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 169 [2024-10-31 22:05:28,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:29,470 INFO L124 PetriNetUnfolderBase]: 2894/6537 cut-off events. [2024-10-31 22:05:29,471 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-10-31 22:05:29,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10849 conditions, 6537 events. 2894/6537 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58947 event pairs, 1812 based on Foata normal form. 2/5209 useless extension candidates. Maximal degree in co-relation 10782. Up to 4192 conditions per place. [2024-10-31 22:05:29,516 INFO L140 encePairwiseOnDemand]: 164/169 looper letters, 91 selfloop transitions, 7 changer transitions 0/180 dead transitions. [2024-10-31 22:05:29,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 180 transitions, 725 flow [2024-10-31 22:05:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2024-10-31 22:05:29,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6765285996055227 [2024-10-31 22:05:29,519 INFO L175 Difference]: Start difference. First operand has 155 places, 182 transitions, 539 flow. Second operand 3 states and 343 transitions. [2024-10-31 22:05:29,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 180 transitions, 725 flow [2024-10-31 22:05:29,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 180 transitions, 695 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:29,528 INFO L231 Difference]: Finished difference. Result has 154 places, 180 transitions, 513 flow [2024-10-31 22:05:29,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=154, PETRI_TRANSITIONS=180} [2024-10-31 22:05:29,529 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 7 predicate places. [2024-10-31 22:05:29,531 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 180 transitions, 513 flow [2024-10-31 22:05:29,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2024-10-31 22:05:29,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:29,532 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-31 22:05:29,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:05:29,533 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:29,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1604617938, now seen corresponding path program 2 times [2024-10-31 22:05:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:29,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744422829] [2024-10-31 22:05:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:29,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744422829] [2024-10-31 22:05:29,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744422829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:29,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192034325] [2024-10-31 22:05:29,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:05:29,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:29,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:29,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:05:29,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:05:29,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:05:29,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:05:29,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:05:29,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-31 22:05:30,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192034325] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:30,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:30,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2024-10-31 22:05:30,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838306414] [2024-10-31 22:05:30,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:30,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:05:30,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:05:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:05:30,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:30,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 180 transitions, 513 flow. Second operand has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 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) [2024-10-31 22:05:30,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:30,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:30,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:31,334 INFO L124 PetriNetUnfolderBase]: 2896/6539 cut-off events. [2024-10-31 22:05:31,335 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-10-31 22:05:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 6539 events. 2896/6539 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 58917 event pairs, 1812 based on Foata normal form. 2/5211 useless extension candidates. Maximal degree in co-relation 10774. Up to 4175 conditions per place. [2024-10-31 22:05:31,377 INFO L140 encePairwiseOnDemand]: 160/169 looper letters, 69 selfloop transitions, 33 changer transitions 0/182 dead transitions. [2024-10-31 22:05:31,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 182 transitions, 721 flow [2024-10-31 22:05:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 22:05:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-31 22:05:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1183 transitions. [2024-10-31 22:05:31,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-10-31 22:05:31,381 INFO L175 Difference]: Start difference. First operand has 154 places, 180 transitions, 513 flow. Second operand 13 states and 1183 transitions. [2024-10-31 22:05:31,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 182 transitions, 721 flow [2024-10-31 22:05:31,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 182 transitions, 685 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-31 22:05:31,387 INFO L231 Difference]: Finished difference. Result has 158 places, 182 transitions, 547 flow [2024-10-31 22:05:31,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=547, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2024-10-31 22:05:31,390 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-10-31 22:05:31,390 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 182 transitions, 547 flow [2024-10-31 22:05:31,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 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) [2024-10-31 22:05:31,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:31,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:31,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:05:31,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:31,593 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:31,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:31,594 INFO L85 PathProgramCache]: Analyzing trace with hash -115340577, now seen corresponding path program 1 times [2024-10-31 22:05:31,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:31,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698680655] [2024-10-31 22:05:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:31,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:05:31,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:31,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698680655] [2024-10-31 22:05:31,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698680655] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:31,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:31,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377443376] [2024-10-31 22:05:31,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:31,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:31,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:31,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:31,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:31,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:31,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 182 transitions, 547 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2024-10-31 22:05:31,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:31,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:31,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:33,304 INFO L124 PetriNetUnfolderBase]: 5153/10831 cut-off events. [2024-10-31 22:05:33,305 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-10-31 22:05:33,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18528 conditions, 10831 events. 5153/10831 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 95791 event pairs, 2276 based on Foata normal form. 112/9063 useless extension candidates. Maximal degree in co-relation 18362. Up to 4875 conditions per place. [2024-10-31 22:05:33,387 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 160 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-10-31 22:05:33,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 238 transitions, 985 flow [2024-10-31 22:05:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2024-10-31 22:05:33,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7672583826429981 [2024-10-31 22:05:33,391 INFO L175 Difference]: Start difference. First operand has 158 places, 182 transitions, 547 flow. Second operand 3 states and 389 transitions. [2024-10-31 22:05:33,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 238 transitions, 985 flow [2024-10-31 22:05:33,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 238 transitions, 865 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-10-31 22:05:33,398 INFO L231 Difference]: Finished difference. Result has 149 places, 183 transitions, 445 flow [2024-10-31 22:05:33,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=445, PETRI_PLACES=149, PETRI_TRANSITIONS=183} [2024-10-31 22:05:33,400 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 2 predicate places. [2024-10-31 22:05:33,402 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 183 transitions, 445 flow [2024-10-31 22:05:33,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2024-10-31 22:05:33,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:33,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:33,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:05:33,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:33,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash -116357444, now seen corresponding path program 1 times [2024-10-31 22:05:33,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:33,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924107568] [2024-10-31 22:05:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:05:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924107568] [2024-10-31 22:05:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924107568] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790058754] [2024-10-31 22:05:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:33,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:33,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-10-31 22:05:33,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 183 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:33,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:33,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-10-31 22:05:33,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:35,230 INFO L124 PetriNetUnfolderBase]: 7104/14899 cut-off events. [2024-10-31 22:05:35,230 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES. [2024-10-31 22:05:35,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25859 conditions, 14899 events. 7104/14899 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 138212 event pairs, 2894 based on Foata normal form. 336/12491 useless extension candidates. Maximal degree in co-relation 9100. Up to 6606 conditions per place. [2024-10-31 22:05:35,321 INFO L140 encePairwiseOnDemand]: 153/169 looper letters, 181 selfloop transitions, 10 changer transitions 0/259 dead transitions. [2024-10-31 22:05:35,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 259 transitions, 981 flow [2024-10-31 22:05:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2024-10-31 22:05:35,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952662721893491 [2024-10-31 22:05:35,323 INFO L175 Difference]: Start difference. First operand has 149 places, 183 transitions, 445 flow. Second operand 4 states and 470 transitions. [2024-10-31 22:05:35,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 259 transitions, 981 flow [2024-10-31 22:05:35,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 259 transitions, 979 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:05:35,334 INFO L231 Difference]: Finished difference. Result has 152 places, 187 transitions, 511 flow [2024-10-31 22:05:35,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=152, PETRI_TRANSITIONS=187} [2024-10-31 22:05:35,335 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 5 predicate places. [2024-10-31 22:05:35,335 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 187 transitions, 511 flow [2024-10-31 22:05:35,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:35,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:35,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:35,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:05:35,337 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:35,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash 687888212, now seen corresponding path program 1 times [2024-10-31 22:05:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897425745] [2024-10-31 22:05:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:05:35,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897425745] [2024-10-31 22:05:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897425745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281853451] [2024-10-31 22:05:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:35,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:35,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:35,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:05:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:35,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:05:35,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:05:35,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:05:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281853451] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:35,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:35,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-31 22:05:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050170528] [2024-10-31 22:05:35,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:35,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:05:35,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:35,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:05:35,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:05:35,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:35,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 187 transitions, 511 flow. Second operand has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 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) [2024-10-31 22:05:35,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:35,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:35,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:37,221 INFO L124 PetriNetUnfolderBase]: 5449/12740 cut-off events. [2024-10-31 22:05:37,222 INFO L125 PetriNetUnfolderBase]: For 1936/2078 co-relation queries the response was YES. [2024-10-31 22:05:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 12740 events. 5449/12740 cut-off events. For 1936/2078 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 124951 event pairs, 3559 based on Foata normal form. 79/10767 useless extension candidates. Maximal degree in co-relation 15845. Up to 7903 conditions per place. [2024-10-31 22:05:37,315 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 79 selfloop transitions, 24 changer transitions 0/183 dead transitions. [2024-10-31 22:05:37,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 183 transitions, 703 flow [2024-10-31 22:05:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:05:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:05:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 671 transitions. [2024-10-31 22:05:37,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5672020287404903 [2024-10-31 22:05:37,318 INFO L175 Difference]: Start difference. First operand has 152 places, 187 transitions, 511 flow. Second operand 7 states and 671 transitions. [2024-10-31 22:05:37,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 183 transitions, 703 flow [2024-10-31 22:05:37,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 703 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:05:37,356 INFO L231 Difference]: Finished difference. Result has 158 places, 183 transitions, 545 flow [2024-10-31 22:05:37,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=158, PETRI_TRANSITIONS=183} [2024-10-31 22:05:37,358 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 11 predicate places. [2024-10-31 22:05:37,359 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 183 transitions, 545 flow [2024-10-31 22:05:37,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 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) [2024-10-31 22:05:37,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:37,360 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:37,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:37,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:05:37,562 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:37,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1947019892, now seen corresponding path program 2 times [2024-10-31 22:05:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249059529] [2024-10-31 22:05:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:05:37,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:37,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249059529] [2024-10-31 22:05:37,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249059529] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:37,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165184454] [2024-10-31 22:05:37,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:05:37,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:37,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:37,858 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:37,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:05:37,980 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:05:37,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:05:37,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:05:37,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-31 22:05:38,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:05:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165184454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:38,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:05:38,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-10-31 22:05:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242360113] [2024-10-31 22:05:38,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:38,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:38,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:38,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:05:38,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 169 [2024-10-31 22:05:38,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 183 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-10-31 22:05:38,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:38,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 169 [2024-10-31 22:05:38,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:39,703 INFO L124 PetriNetUnfolderBase]: 6295/14332 cut-off events. [2024-10-31 22:05:39,704 INFO L125 PetriNetUnfolderBase]: For 2288/2330 co-relation queries the response was YES. [2024-10-31 22:05:39,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26244 conditions, 14332 events. 6295/14332 cut-off events. For 2288/2330 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 139767 event pairs, 3226 based on Foata normal form. 42/12086 useless extension candidates. Maximal degree in co-relation 26121. Up to 7093 conditions per place. [2024-10-31 22:05:39,797 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 136 selfloop transitions, 7 changer transitions 0/219 dead transitions. [2024-10-31 22:05:39,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 219 transitions, 906 flow [2024-10-31 22:05:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2024-10-31 22:05:39,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6523668639053254 [2024-10-31 22:05:39,800 INFO L175 Difference]: Start difference. First operand has 158 places, 183 transitions, 545 flow. Second operand 4 states and 441 transitions. [2024-10-31 22:05:39,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 219 transitions, 906 flow [2024-10-31 22:05:39,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 219 transitions, 858 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 22:05:39,843 INFO L231 Difference]: Finished difference. Result has 155 places, 183 transitions, 521 flow [2024-10-31 22:05:39,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=521, PETRI_PLACES=155, PETRI_TRANSITIONS=183} [2024-10-31 22:05:39,845 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-10-31 22:05:39,846 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 183 transitions, 521 flow [2024-10-31 22:05:39,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2024-10-31 22:05:39,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:39,847 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:39,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:05:40,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-31 22:05:40,050 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:40,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:40,050 INFO L85 PathProgramCache]: Analyzing trace with hash 228044423, now seen corresponding path program 1 times [2024-10-31 22:05:40,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:40,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707444120] [2024-10-31 22:05:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:40,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:05:40,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:40,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707444120] [2024-10-31 22:05:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707444120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638359318] [2024-10-31 22:05:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:40,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:40,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:40,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:05:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:40,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:05:40,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:05:40,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:05:40,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638359318] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:40,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:40,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-10-31 22:05:40,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892378704] [2024-10-31 22:05:40,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:40,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-31 22:05:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-31 22:05:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:05:40,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:40,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 183 transitions, 521 flow. Second operand has 23 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 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) [2024-10-31 22:05:40,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:40,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:40,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:42,693 INFO L124 PetriNetUnfolderBase]: 5757/13572 cut-off events. [2024-10-31 22:05:42,693 INFO L125 PetriNetUnfolderBase]: For 3780/3922 co-relation queries the response was YES. [2024-10-31 22:05:42,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25075 conditions, 13572 events. 5757/13572 cut-off events. For 3780/3922 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 134823 event pairs, 3813 based on Foata normal form. 79/11429 useless extension candidates. Maximal degree in co-relation 18793. Up to 8381 conditions per place. [2024-10-31 22:05:42,757 INFO L140 encePairwiseOnDemand]: 162/169 looper letters, 78 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-10-31 22:05:42,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 179 transitions, 707 flow [2024-10-31 22:05:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:05:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:05:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1011 transitions. [2024-10-31 22:05:42,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5438407746100054 [2024-10-31 22:05:42,763 INFO L175 Difference]: Start difference. First operand has 155 places, 183 transitions, 521 flow. Second operand 11 states and 1011 transitions. [2024-10-31 22:05:42,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 179 transitions, 707 flow [2024-10-31 22:05:42,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 179 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:42,818 INFO L231 Difference]: Finished difference. Result has 163 places, 179 transitions, 543 flow [2024-10-31 22:05:42,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=543, PETRI_PLACES=163, PETRI_TRANSITIONS=179} [2024-10-31 22:05:42,819 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 16 predicate places. [2024-10-31 22:05:42,819 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 179 transitions, 543 flow [2024-10-31 22:05:42,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 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) [2024-10-31 22:05:42,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:42,820 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:42,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:43,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9cbee32-6286-4f79-a8cd-f0456abd3234/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:05:43,021 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:43,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:43,022 INFO L85 PathProgramCache]: Analyzing trace with hash -42703001, now seen corresponding path program 2 times [2024-10-31 22:05:43,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:43,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927866381] [2024-10-31 22:05:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:43,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-31 22:05:43,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:43,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927866381] [2024-10-31 22:05:43,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927866381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:43,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:43,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:43,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834344968] [2024-10-31 22:05:43,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:43,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:43,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:43,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:43,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 169 [2024-10-31 22:05:43,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 179 transitions, 543 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-10-31 22:05:43,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:43,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 169 [2024-10-31 22:05:43,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:44,532 INFO L124 PetriNetUnfolderBase]: 6529/14592 cut-off events. [2024-10-31 22:05:44,533 INFO L125 PetriNetUnfolderBase]: For 4096/4138 co-relation queries the response was YES. [2024-10-31 22:05:44,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 14592 events. 6529/14592 cut-off events. For 4096/4138 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 140627 event pairs, 3522 based on Foata normal form. 98/12314 useless extension candidates. Maximal degree in co-relation 27485. Up to 7689 conditions per place. [2024-10-31 22:05:44,594 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 134 selfloop transitions, 7 changer transitions 0/213 dead transitions. [2024-10-31 22:05:44,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 213 transitions, 892 flow [2024-10-31 22:05:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:05:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:05:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2024-10-31 22:05:44,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6390532544378699 [2024-10-31 22:05:44,597 INFO L175 Difference]: Start difference. First operand has 163 places, 179 transitions, 543 flow. Second operand 4 states and 432 transitions. [2024-10-31 22:05:44,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 213 transitions, 892 flow [2024-10-31 22:05:44,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 213 transitions, 848 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-31 22:05:44,644 INFO L231 Difference]: Finished difference. Result has 155 places, 178 transitions, 509 flow [2024-10-31 22:05:44,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=155, PETRI_TRANSITIONS=178} [2024-10-31 22:05:44,645 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-10-31 22:05:44,645 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 178 transitions, 509 flow [2024-10-31 22:05:44,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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) [2024-10-31 22:05:44,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:44,646 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:44,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:05:44,646 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:44,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1540450559, now seen corresponding path program 1 times [2024-10-31 22:05:44,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273232888] [2024-10-31 22:05:44,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-31 22:05:44,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:44,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273232888] [2024-10-31 22:05:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273232888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:44,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:05:44,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020103630] [2024-10-31 22:05:44,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:44,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:05:44,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:05:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:05:44,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 169 [2024-10-31 22:05:44,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 178 transitions, 509 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-10-31 22:05:44,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:44,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 169 [2024-10-31 22:05:44,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:47,124 INFO L124 PetriNetUnfolderBase]: 9773/20944 cut-off events. [2024-10-31 22:05:47,124 INFO L125 PetriNetUnfolderBase]: For 6589/6906 co-relation queries the response was YES. [2024-10-31 22:05:47,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40029 conditions, 20944 events. 9773/20944 cut-off events. For 6589/6906 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 201588 event pairs, 4417 based on Foata normal form. 417/18412 useless extension candidates. Maximal degree in co-relation 33359. Up to 9507 conditions per place. [2024-10-31 22:05:47,283 INFO L140 encePairwiseOnDemand]: 163/169 looper letters, 162 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-10-31 22:05:47,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 238 transitions, 1020 flow [2024-10-31 22:05:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:05:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:05:47,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2024-10-31 22:05:47,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7633136094674556 [2024-10-31 22:05:47,285 INFO L175 Difference]: Start difference. First operand has 155 places, 178 transitions, 509 flow. Second operand 3 states and 387 transitions. [2024-10-31 22:05:47,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 238 transitions, 1020 flow [2024-10-31 22:05:47,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 238 transitions, 1000 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:47,359 INFO L231 Difference]: Finished difference. Result has 155 places, 179 transitions, 513 flow [2024-10-31 22:05:47,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=513, PETRI_PLACES=155, PETRI_TRANSITIONS=179} [2024-10-31 22:05:47,360 INFO L277 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2024-10-31 22:05:47,360 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 179 transitions, 513 flow [2024-10-31 22:05:47,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2024-10-31 22:05:47,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:47,361 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:47,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:05:47,361 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2024-10-31 22:05:47,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:47,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1539433692, now seen corresponding path program 1 times [2024-10-31 22:05:47,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442290497] [2024-10-31 22:05:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-31 22:05:47,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442290497] [2024-10-31 22:05:47,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442290497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:47,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:47,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:05:47,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036473161] [2024-10-31 22:05:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:47,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:05:47,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:47,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:05:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:05:47,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 169 [2024-10-31 22:05:47,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 179 transitions, 513 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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) [2024-10-31 22:05:47,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:47,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 169 [2024-10-31 22:05:47,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand