./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya --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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:47:58,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:47:58,870 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:47:58,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:47:58,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:47:58,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:47:58,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:47:58,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:47:58,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:47:58,908 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:47:58,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:47:58,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:47:58,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:47:58,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:47:58,911 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:47:58,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:47:58,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:47:58,913 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:47:58,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:47:58,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:47:58,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:47:58,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:47:58,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:47:58,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:47:58,916 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:47:58,917 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:47:58,917 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:47:58,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:47:58,918 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:47:58,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:47:58,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:47:58,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:47:58,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:47:58,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:47:58,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:47:58,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:47:58,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:47:58,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:47:58,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:47:58,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:47:58,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:47:58,921 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:47:58,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:47:58,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:47:58,922 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_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-29 04:47:59,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:47:59,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:47:59,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:47:59,170 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:47:59,171 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:47:59,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-29 04:48:01,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:48:02,095 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:48:02,095 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-29 04:48:02,103 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/data/de5c15219/b968cf94e06243f3b678c1ac36efcb23/FLAGc1c358780 [2023-11-29 04:48:02,116 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/data/de5c15219/b968cf94e06243f3b678c1ac36efcb23 [2023-11-29 04:48:02,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:48:02,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:48:02,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:02,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:48:02,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:48:02,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8f3020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02, skipping insertion in model container [2023-11-29 04:48:02,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,152 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:48:02,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:02,320 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:48:02,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:02,362 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:48:02,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02 WrapperNode [2023-11-29 04:48:02,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:02,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:02,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:48:02,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:48:02,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,408 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 218 [2023-11-29 04:48:02,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:02,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:48:02,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:48:02,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:48:02,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,441 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 2, 3, 2, 9]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 5]. [2023-11-29 04:48:02,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:48:02,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:48:02,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:48:02,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:48:02,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:48:02,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:02,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:48:02,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:48:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:48:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:48:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:48:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:48:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:48:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 04:48:02,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:48:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:48:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:48:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:48:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:48:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 04:48:02,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:48:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:48:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:48:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:48:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 04:48:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:48:02,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:48:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:48:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:48:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 04:48:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:48:02,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:48:02,534 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:48:02,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:48:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:48:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:48:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:48:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:48:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 04:48:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:48:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:48:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:48:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:48:02,538 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:48:02,720 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:48:02,722 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:48:03,119 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:48:03,443 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:48:03,443 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-29 04:48:03,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:03 BoogieIcfgContainer [2023-11-29 04:48:03,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:48:03,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:48:03,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:48:03,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:48:03,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:48:02" (1/3) ... [2023-11-29 04:48:03,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6860b9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:03, skipping insertion in model container [2023-11-29 04:48:03,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (2/3) ... [2023-11-29 04:48:03,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6860b9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:03, skipping insertion in model container [2023-11-29 04:48:03,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:03" (3/3) ... [2023-11-29 04:48:03,453 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-29 04:48:03,463 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:48:03,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:48:03,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 04:48:03,475 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:48:03,539 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:48:03,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 178 flow [2023-11-29 04:48:03,618 INFO L124 PetriNetUnfolderBase]: 8/80 cut-off events. [2023-11-29 04:48:03,618 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:48:03,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 8/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-29 04:48:03,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 82 transitions, 178 flow [2023-11-29 04:48:03,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 79 transitions, 170 flow [2023-11-29 04:48:03,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:48:03,644 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@63e2c551, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:48:03,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-29 04:48:03,648 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:48:03,649 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-29 04:48:03,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:48:03,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:03,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:48:03,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:03,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:03,656 INFO L85 PathProgramCache]: Analyzing trace with hash 792586, now seen corresponding path program 1 times [2023-11-29 04:48:03,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:03,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090584393] [2023-11-29 04:48:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:03,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:03,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025428548] [2023-11-29 04:48:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:03,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:03,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:03,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:48:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:03,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:48:03,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:03,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:03,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:03,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090584393] [2023-11-29 04:48:03,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:03,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025428548] [2023-11-29 04:48:03,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025428548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:03,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:03,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234185130] [2023-11-29 04:48:03,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:03,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:04,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 82 [2023-11-29 04:48:04,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2023-11-29 04:48:04,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:04,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 82 [2023-11-29 04:48:04,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:04,394 INFO L124 PetriNetUnfolderBase]: 242/691 cut-off events. [2023-11-29 04:48:04,395 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 04:48:04,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1160 conditions, 691 events. 242/691 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4048 event pairs, 162 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 446. Up to 214 conditions per place. [2023-11-29 04:48:04,404 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 71 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2023-11-29 04:48:04,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 113 transitions, 400 flow [2023-11-29 04:48:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:48:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 277 transitions. [2023-11-29 04:48:04,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675609756097561 [2023-11-29 04:48:04,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 277 transitions. [2023-11-29 04:48:04,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 277 transitions. [2023-11-29 04:48:04,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:04,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 277 transitions. [2023-11-29 04:48:04,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:04,434 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:04,436 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 170 flow. Second operand 5 states and 277 transitions. [2023-11-29 04:48:04,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 113 transitions, 400 flow [2023-11-29 04:48:04,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 113 transitions, 384 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:48:04,444 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 173 flow [2023-11-29 04:48:04,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2023-11-29 04:48:04,450 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-29 04:48:04,450 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 173 flow [2023-11-29 04:48:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2023-11-29 04:48:04,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:04,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 04:48:04,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:04,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:48:04,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:04,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash 24568774, now seen corresponding path program 1 times [2023-11-29 04:48:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:04,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219504215] [2023-11-29 04:48:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:04,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:04,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:04,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403828359] [2023-11-29 04:48:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:04,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:04,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:04,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:04,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:48:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:04,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:48:04,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:04,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:04,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219504215] [2023-11-29 04:48:04,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403828359] [2023-11-29 04:48:04,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403828359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:04,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:04,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440454111] [2023-11-29 04:48:04,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:04,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:04,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:04,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:04,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 82 [2023-11-29 04:48:04,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2023-11-29 04:48:04,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:04,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 82 [2023-11-29 04:48:04,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:05,059 INFO L124 PetriNetUnfolderBase]: 242/681 cut-off events. [2023-11-29 04:48:05,059 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-29 04:48:05,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 681 events. 242/681 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3938 event pairs, 162 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 562. Up to 215 conditions per place. [2023-11-29 04:48:05,065 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 67 selfloop transitions, 4 changer transitions 1/110 dead transitions. [2023-11-29 04:48:05,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 385 flow [2023-11-29 04:48:05,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:48:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 275 transitions. [2023-11-29 04:48:05,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2023-11-29 04:48:05,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 275 transitions. [2023-11-29 04:48:05,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 275 transitions. [2023-11-29 04:48:05,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:05,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 275 transitions. [2023-11-29 04:48:05,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 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) [2023-11-29 04:48:05,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:05,074 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:05,074 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 173 flow. Second operand 5 states and 275 transitions. [2023-11-29 04:48:05,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 110 transitions, 385 flow [2023-11-29 04:48:05,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 110 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:48:05,077 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 184 flow [2023-11-29 04:48:05,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2023-11-29 04:48:05,078 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-11-29 04:48:05,079 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 184 flow [2023-11-29 04:48:05,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2023-11-29 04:48:05,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:05,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:48:05,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:48:05,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:05,280 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:05,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2137857850, now seen corresponding path program 1 times [2023-11-29 04:48:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211113129] [2023-11-29 04:48:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:05,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:05,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734032298] [2023-11-29 04:48:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:05,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:05,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:05,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:05,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:48:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:05,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:48:05,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:05,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:05,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211113129] [2023-11-29 04:48:05,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734032298] [2023-11-29 04:48:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734032298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:05,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403562956] [2023-11-29 04:48:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:05,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:05,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 82 [2023-11-29 04:48:05,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2023-11-29 04:48:05,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:05,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 82 [2023-11-29 04:48:05,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:05,821 INFO L124 PetriNetUnfolderBase]: 242/680 cut-off events. [2023-11-29 04:48:05,821 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-29 04:48:05,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 680 events. 242/680 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3939 event pairs, 162 based on Foata normal form. 1/498 useless extension candidates. Maximal degree in co-relation 563. Up to 213 conditions per place. [2023-11-29 04:48:05,827 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 66 selfloop transitions, 4 changer transitions 1/109 dead transitions. [2023-11-29 04:48:05,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 390 flow [2023-11-29 04:48:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:48:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 272 transitions. [2023-11-29 04:48:05,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6634146341463415 [2023-11-29 04:48:05,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 272 transitions. [2023-11-29 04:48:05,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 272 transitions. [2023-11-29 04:48:05,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:05,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 272 transitions. [2023-11-29 04:48:05,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 54.4) internal successors, (272), 5 states have internal predecessors, (272), 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) [2023-11-29 04:48:05,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:05,833 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:05,833 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 184 flow. Second operand 5 states and 272 transitions. [2023-11-29 04:48:05,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 390 flow [2023-11-29 04:48:05,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 109 transitions, 382 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:05,837 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 180 flow [2023-11-29 04:48:05,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-29 04:48:05,838 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-11-29 04:48:05,838 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 180 flow [2023-11-29 04:48:05,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2023-11-29 04:48:05,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:05,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:05,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:48:06,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:06,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:06,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1784696451, now seen corresponding path program 1 times [2023-11-29 04:48:06,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:06,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293212805] [2023-11-29 04:48:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:06,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:06,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29719299] [2023-11-29 04:48:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:06,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:06,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:06,066 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:06,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:48:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:06,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:06,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:06,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:06,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:06,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293212805] [2023-11-29 04:48:06,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:06,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29719299] [2023-11-29 04:48:06,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29719299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:06,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:06,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:06,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771141995] [2023-11-29 04:48:06,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:06,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:06,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:06,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:48:06,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 04:48:06,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:06,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:48:06,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:06,357 INFO L124 PetriNetUnfolderBase]: 242/674 cut-off events. [2023-11-29 04:48:06,357 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 04:48:06,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 674 events. 242/674 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3903 event pairs, 162 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 562. Up to 406 conditions per place. [2023-11-29 04:48:06,362 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 30 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2023-11-29 04:48:06,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 254 flow [2023-11-29 04:48:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2023-11-29 04:48:06,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036585365853658 [2023-11-29 04:48:06,364 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 198 transitions. [2023-11-29 04:48:06,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 198 transitions. [2023-11-29 04:48:06,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:06,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 198 transitions. [2023-11-29 04:48:06,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2023-11-29 04:48:06,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:06,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:06,367 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 180 flow. Second operand 4 states and 198 transitions. [2023-11-29 04:48:06,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 254 flow [2023-11-29 04:48:06,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 247 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:06,370 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 187 flow [2023-11-29 04:48:06,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-11-29 04:48:06,371 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-11-29 04:48:06,371 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 187 flow [2023-11-29 04:48:06,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 04:48:06,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:06,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:06,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:48:06,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:06,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:06,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1849084705, now seen corresponding path program 1 times [2023-11-29 04:48:06,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:06,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345653486] [2023-11-29 04:48:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:06,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:06,593 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300331051] [2023-11-29 04:48:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:06,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:06,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:06,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:06,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:48:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:07,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:48:07,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:11,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:11,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345653486] [2023-11-29 04:48:11,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300331051] [2023-11-29 04:48:11,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300331051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:11,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:11,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358355281] [2023-11-29 04:48:11,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:11,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:11,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:11,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:15,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:48:17,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:48:17,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2023-11-29 04:48:17,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:17,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:48:17,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:17,491 INFO L124 PetriNetUnfolderBase]: 242/673 cut-off events. [2023-11-29 04:48:17,492 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 04:48:17,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 673 events. 242/673 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3869 event pairs, 162 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 569. Up to 211 conditions per place. [2023-11-29 04:48:17,496 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 65 selfloop transitions, 5 changer transitions 1/105 dead transitions. [2023-11-29 04:48:17,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 413 flow [2023-11-29 04:48:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:48:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 306 transitions. [2023-11-29 04:48:17,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2023-11-29 04:48:17,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 306 transitions. [2023-11-29 04:48:17,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 306 transitions. [2023-11-29 04:48:17,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:17,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 306 transitions. [2023-11-29 04:48:17,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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) [2023-11-29 04:48:17,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:17,502 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:17,503 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 187 flow. Second operand 6 states and 306 transitions. [2023-11-29 04:48:17,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 413 flow [2023-11-29 04:48:17,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 105 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:17,506 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 173 flow [2023-11-29 04:48:17,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-11-29 04:48:17,507 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2023-11-29 04:48:17,507 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 173 flow [2023-11-29 04:48:17,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2023-11-29 04:48:17,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:17,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:17,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:17,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:17,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:17,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash -508984080, now seen corresponding path program 1 times [2023-11-29 04:48:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754680643] [2023-11-29 04:48:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:17,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259343689] [2023-11-29 04:48:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:17,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:17,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:17,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:48:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:17,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:17,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:17,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754680643] [2023-11-29 04:48:17,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259343689] [2023-11-29 04:48:17,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259343689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:17,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:17,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:17,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772407568] [2023-11-29 04:48:17,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:17,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:17,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:17,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:17,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:48:17,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 04:48:17,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:17,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:48:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:17,992 INFO L124 PetriNetUnfolderBase]: 248/697 cut-off events. [2023-11-29 04:48:17,992 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 04:48:17,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 697 events. 248/697 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4062 event pairs, 162 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 585. Up to 434 conditions per place. [2023-11-29 04:48:17,996 INFO L140 encePairwiseOnDemand]: 68/82 looper letters, 38 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2023-11-29 04:48:17,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 289 flow [2023-11-29 04:48:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2023-11-29 04:48:17,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6310975609756098 [2023-11-29 04:48:17,997 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 207 transitions. [2023-11-29 04:48:17,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 207 transitions. [2023-11-29 04:48:17,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:17,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 207 transitions. [2023-11-29 04:48:17,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:17,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:17,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:17,999 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 173 flow. Second operand 4 states and 207 transitions. [2023-11-29 04:48:17,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 289 flow [2023-11-29 04:48:18,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 273 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-29 04:48:18,003 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 243 flow [2023-11-29 04:48:18,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2023-11-29 04:48:18,004 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2023-11-29 04:48:18,004 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 243 flow [2023-11-29 04:48:18,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-29 04:48:18,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:18,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:18,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:18,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 04:48:18,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:18,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash 495178085, now seen corresponding path program 1 times [2023-11-29 04:48:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525084726] [2023-11-29 04:48:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:18,230 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:18,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223183650] [2023-11-29 04:48:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:18,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:18,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:18,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:18,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:48:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:18,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:18,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:18,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:18,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:18,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525084726] [2023-11-29 04:48:18,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:18,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223183650] [2023-11-29 04:48:18,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223183650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:18,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:18,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:18,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631353586] [2023-11-29 04:48:18,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:18,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:18,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:18,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:18,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:18,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:18,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-29 04:48:18,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:18,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:18,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:18,525 INFO L124 PetriNetUnfolderBase]: 248/695 cut-off events. [2023-11-29 04:48:18,525 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-29 04:48:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 695 events. 248/695 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4057 event pairs, 162 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 1093. Up to 422 conditions per place. [2023-11-29 04:48:18,529 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 41 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-11-29 04:48:18,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 81 transitions, 335 flow [2023-11-29 04:48:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2023-11-29 04:48:18,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2023-11-29 04:48:18,530 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 210 transitions. [2023-11-29 04:48:18,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 210 transitions. [2023-11-29 04:48:18,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:18,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 210 transitions. [2023-11-29 04:48:18,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2023-11-29 04:48:18,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:18,532 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:18,532 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 243 flow. Second operand 4 states and 210 transitions. [2023-11-29 04:48:18,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 81 transitions, 335 flow [2023-11-29 04:48:18,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 81 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:48:18,535 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 253 flow [2023-11-29 04:48:18,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2023-11-29 04:48:18,536 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2023-11-29 04:48:18,536 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 253 flow [2023-11-29 04:48:18,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-29 04:48:18,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:18,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:18,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:18,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:18,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:18,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1829347736, now seen corresponding path program 1 times [2023-11-29 04:48:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768504983] [2023-11-29 04:48:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:18,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:18,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751398319] [2023-11-29 04:48:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:18,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:18,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:18,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:18,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:48:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:18,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:18,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:18,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768504983] [2023-11-29 04:48:18,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:18,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751398319] [2023-11-29 04:48:18,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751398319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:18,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:18,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788809616] [2023-11-29 04:48:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:18,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:18,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-29 04:48:18,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:18,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:18,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:19,040 INFO L124 PetriNetUnfolderBase]: 254/721 cut-off events. [2023-11-29 04:48:19,040 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-29 04:48:19,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 721 events. 254/721 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4310 event pairs, 162 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 1133. Up to 444 conditions per place. [2023-11-29 04:48:19,044 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 50 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-11-29 04:48:19,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 90 transitions, 413 flow [2023-11-29 04:48:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2023-11-29 04:48:19,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2023-11-29 04:48:19,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 216 transitions. [2023-11-29 04:48:19,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 216 transitions. [2023-11-29 04:48:19,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:19,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 216 transitions. [2023-11-29 04:48:19,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 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) [2023-11-29 04:48:19,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:19,048 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:19,048 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 253 flow. Second operand 4 states and 216 transitions. [2023-11-29 04:48:19,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 90 transitions, 413 flow [2023-11-29 04:48:19,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 393 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:19,052 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 285 flow [2023-11-29 04:48:19,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-11-29 04:48:19,053 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-11-29 04:48:19,053 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 285 flow [2023-11-29 04:48:19,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2023-11-29 04:48:19,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:19,053 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:19,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:48:19,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:19,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:19,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1909348811, now seen corresponding path program 1 times [2023-11-29 04:48:19,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:19,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818983773] [2023-11-29 04:48:19,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:19,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:19,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:19,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966835790] [2023-11-29 04:48:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:19,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:19,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:19,273 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:19,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:48:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:19,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:48:19,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:19,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:19,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818983773] [2023-11-29 04:48:19,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966835790] [2023-11-29 04:48:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966835790] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:19,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:19,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 04:48:19,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234007128] [2023-11-29 04:48:19,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:19,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:48:19,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:48:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:48:19,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:48:19,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 40.2) internal successors, (402), 10 states have internal predecessors, (402), 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) [2023-11-29 04:48:19,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:19,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:48:19,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:19,779 INFO L124 PetriNetUnfolderBase]: 278/817 cut-off events. [2023-11-29 04:48:19,779 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2023-11-29 04:48:19,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 817 events. 278/817 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5130 event pairs, 162 based on Foata normal form. 0/639 useless extension candidates. Maximal degree in co-relation 1385. Up to 468 conditions per place. [2023-11-29 04:48:19,785 INFO L140 encePairwiseOnDemand]: 68/82 looper letters, 41 selfloop transitions, 42 changer transitions 0/115 dead transitions. [2023-11-29 04:48:19,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 115 transitions, 604 flow [2023-11-29 04:48:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:48:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:48:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 474 transitions. [2023-11-29 04:48:19,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-11-29 04:48:19,788 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 474 transitions. [2023-11-29 04:48:19,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 474 transitions. [2023-11-29 04:48:19,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:19,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 474 transitions. [2023-11-29 04:48:19,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 47.4) internal successors, (474), 10 states have internal predecessors, (474), 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) [2023-11-29 04:48:19,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:48:19,793 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:48:19,793 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 285 flow. Second operand 10 states and 474 transitions. [2023-11-29 04:48:19,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 115 transitions, 604 flow [2023-11-29 04:48:19,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:19,797 INFO L231 Difference]: Finished difference. Result has 94 places, 115 transitions, 569 flow [2023-11-29 04:48:19,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=569, PETRI_PLACES=94, PETRI_TRANSITIONS=115} [2023-11-29 04:48:19,798 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2023-11-29 04:48:19,799 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 115 transitions, 569 flow [2023-11-29 04:48:19,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 40.2) internal successors, (402), 10 states have internal predecessors, (402), 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) [2023-11-29 04:48:19,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:19,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:19,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:48:20,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:20,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:20,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash -874118063, now seen corresponding path program 1 times [2023-11-29 04:48:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779392471] [2023-11-29 04:48:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:20,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:20,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:20,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745532529] [2023-11-29 04:48:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:20,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:20,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:20,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:20,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:48:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:20,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:20,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:20,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:20,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779392471] [2023-11-29 04:48:20,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745532529] [2023-11-29 04:48:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745532529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:20,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443023965] [2023-11-29 04:48:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:20,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:20,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:20,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 115 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2023-11-29 04:48:20,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:20,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:20,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:20,342 INFO L124 PetriNetUnfolderBase]: 328/815 cut-off events. [2023-11-29 04:48:20,343 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-11-29 04:48:20,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 815 events. 328/815 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4792 event pairs, 70 based on Foata normal form. 32/685 useless extension candidates. Maximal degree in co-relation 1603. Up to 336 conditions per place. [2023-11-29 04:48:20,349 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 99 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2023-11-29 04:48:20,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 819 flow [2023-11-29 04:48:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:20,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2023-11-29 04:48:20,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2023-11-29 04:48:20,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 232 transitions. [2023-11-29 04:48:20,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 232 transitions. [2023-11-29 04:48:20,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:20,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 232 transitions. [2023-11-29 04:48:20,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-11-29 04:48:20,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:20,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:20,353 INFO L175 Difference]: Start difference. First operand has 94 places, 115 transitions, 569 flow. Second operand 4 states and 232 transitions. [2023-11-29 04:48:20,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 136 transitions, 819 flow [2023-11-29 04:48:20,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 711 flow, removed 33 selfloop flow, removed 4 redundant places. [2023-11-29 04:48:20,360 INFO L231 Difference]: Finished difference. Result has 92 places, 114 transitions, 467 flow [2023-11-29 04:48:20,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=467, PETRI_PLACES=92, PETRI_TRANSITIONS=114} [2023-11-29 04:48:20,375 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2023-11-29 04:48:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 114 transitions, 467 flow [2023-11-29 04:48:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2023-11-29 04:48:20,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:20,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:20,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:48:20,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:48:20,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:20,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1327855324, now seen corresponding path program 1 times [2023-11-29 04:48:20,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:20,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520052079] [2023-11-29 04:48:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:20,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:20,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:20,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107877810] [2023-11-29 04:48:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:20,592 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:20,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:48:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:20,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:20,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:20,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:20,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:20,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520052079] [2023-11-29 04:48:20,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:20,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107877810] [2023-11-29 04:48:20,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107877810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:20,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:20,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:20,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610002000] [2023-11-29 04:48:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:20,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:20,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:20,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:20,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 467 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2023-11-29 04:48:20,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:20,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:20,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:20,938 INFO L124 PetriNetUnfolderBase]: 460/1163 cut-off events. [2023-11-29 04:48:20,938 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-11-29 04:48:20,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 1163 events. 460/1163 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7472 event pairs, 184 based on Foata normal form. 32/963 useless extension candidates. Maximal degree in co-relation 2277. Up to 646 conditions per place. [2023-11-29 04:48:20,948 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 102 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2023-11-29 04:48:20,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 139 transitions, 737 flow [2023-11-29 04:48:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:20,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2023-11-29 04:48:20,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164634146341463 [2023-11-29 04:48:20,950 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 235 transitions. [2023-11-29 04:48:20,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 235 transitions. [2023-11-29 04:48:20,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:20,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 235 transitions. [2023-11-29 04:48:20,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2023-11-29 04:48:20,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:20,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:20,953 INFO L175 Difference]: Start difference. First operand has 92 places, 114 transitions, 467 flow. Second operand 4 states and 235 transitions. [2023-11-29 04:48:20,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 139 transitions, 737 flow [2023-11-29 04:48:20,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 139 transitions, 723 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:20,960 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 486 flow [2023-11-29 04:48:20,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2023-11-29 04:48:20,961 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2023-11-29 04:48:20,961 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 486 flow [2023-11-29 04:48:20,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2023-11-29 04:48:20,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:20,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:20,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:48:21,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:21,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:21,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1153430917, now seen corresponding path program 1 times [2023-11-29 04:48:21,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:21,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703266982] [2023-11-29 04:48:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:21,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:21,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:21,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388854400] [2023-11-29 04:48:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:21,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:21,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:21,180 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:21,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:48:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:21,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:48:21,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:21,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:21,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703266982] [2023-11-29 04:48:21,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388854400] [2023-11-29 04:48:21,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388854400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:21,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:21,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:48:21,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149195248] [2023-11-29 04:48:21,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:21,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:48:21,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:48:21,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:21,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:21,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 486 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2023-11-29 04:48:21,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:21,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:21,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:21,716 INFO L124 PetriNetUnfolderBase]: 542/1425 cut-off events. [2023-11-29 04:48:21,716 INFO L125 PetriNetUnfolderBase]: For 581/585 co-relation queries the response was YES. [2023-11-29 04:48:21,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3216 conditions, 1425 events. 542/1425 cut-off events. For 581/585 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9469 event pairs, 312 based on Foata normal form. 1/1186 useless extension candidates. Maximal degree in co-relation 3001. Up to 684 conditions per place. [2023-11-29 04:48:21,727 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 102 selfloop transitions, 9 changer transitions 9/154 dead transitions. [2023-11-29 04:48:21,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 154 transitions, 877 flow [2023-11-29 04:48:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:48:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 279 transitions. [2023-11-29 04:48:21,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6804878048780488 [2023-11-29 04:48:21,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 279 transitions. [2023-11-29 04:48:21,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 279 transitions. [2023-11-29 04:48:21,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:21,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 279 transitions. [2023-11-29 04:48:21,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 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) [2023-11-29 04:48:21,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:21,732 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:21,732 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 486 flow. Second operand 5 states and 279 transitions. [2023-11-29 04:48:21,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 154 transitions, 877 flow [2023-11-29 04:48:21,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 154 transitions, 868 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:21,738 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 518 flow [2023-11-29 04:48:21,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2023-11-29 04:48:21,739 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2023-11-29 04:48:21,739 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 518 flow [2023-11-29 04:48:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2023-11-29 04:48:21,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:21,740 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:21,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:48:21,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:21,941 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:21,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:21,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1540099703, now seen corresponding path program 1 times [2023-11-29 04:48:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730189738] [2023-11-29 04:48:21,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:21,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:21,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597212884] [2023-11-29 04:48:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:21,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:21,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:21,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:21,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:48:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:22,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:48:22,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:22,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730189738] [2023-11-29 04:48:22,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597212884] [2023-11-29 04:48:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597212884] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:22,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 04:48:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181709046] [2023-11-29 04:48:22,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:22,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:48:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:48:22,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:48:22,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:22,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 518 flow. Second operand has 10 states, 10 states have (on average 44.8) internal successors, (448), 10 states have internal predecessors, (448), 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) [2023-11-29 04:48:22,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:22,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:22,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:22,502 INFO L124 PetriNetUnfolderBase]: 578/1607 cut-off events. [2023-11-29 04:48:22,502 INFO L125 PetriNetUnfolderBase]: For 760/780 co-relation queries the response was YES. [2023-11-29 04:48:22,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 1607 events. 578/1607 cut-off events. For 760/780 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11019 event pairs, 348 based on Foata normal form. 0/1351 useless extension candidates. Maximal degree in co-relation 3446. Up to 938 conditions per place. [2023-11-29 04:48:22,514 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 118 selfloop transitions, 33 changer transitions 0/184 dead transitions. [2023-11-29 04:48:22,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 184 transitions, 1161 flow [2023-11-29 04:48:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:48:22,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:48:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 494 transitions. [2023-11-29 04:48:22,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024390243902439 [2023-11-29 04:48:22,518 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 494 transitions. [2023-11-29 04:48:22,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 494 transitions. [2023-11-29 04:48:22,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:22,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 494 transitions. [2023-11-29 04:48:22,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 49.4) internal successors, (494), 10 states have internal predecessors, (494), 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) [2023-11-29 04:48:22,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:48:22,522 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:48:22,522 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 518 flow. Second operand 10 states and 494 transitions. [2023-11-29 04:48:22,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 184 transitions, 1161 flow [2023-11-29 04:48:22,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 184 transitions, 1148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:48:22,531 INFO L231 Difference]: Finished difference. Result has 109 places, 140 transitions, 726 flow [2023-11-29 04:48:22,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=726, PETRI_PLACES=109, PETRI_TRANSITIONS=140} [2023-11-29 04:48:22,532 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2023-11-29 04:48:22,532 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 140 transitions, 726 flow [2023-11-29 04:48:22,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 44.8) internal successors, (448), 10 states have internal predecessors, (448), 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) [2023-11-29 04:48:22,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:22,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:22,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:48:22,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:48:22,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:22,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1488318962, now seen corresponding path program 1 times [2023-11-29 04:48:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:22,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575772289] [2023-11-29 04:48:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:22,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:22,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5545] [2023-11-29 04:48:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:22,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:22,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:22,750 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:22,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:48:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:22,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:48:22,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:22,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:22,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:22,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575772289] [2023-11-29 04:48:22,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:22,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5545] [2023-11-29 04:48:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:22,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:22,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:48:22,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153909366] [2023-11-29 04:48:22,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:22,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:48:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:22,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:48:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:22,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 04:48:22,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 140 transitions, 726 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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) [2023-11-29 04:48:22,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:22,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 04:48:22,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:23,339 INFO L124 PetriNetUnfolderBase]: 844/2453 cut-off events. [2023-11-29 04:48:23,339 INFO L125 PetriNetUnfolderBase]: For 1423/1443 co-relation queries the response was YES. [2023-11-29 04:48:23,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6061 conditions, 2453 events. 844/2453 cut-off events. For 1423/1443 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 18481 event pairs, 456 based on Foata normal form. 48/2152 useless extension candidates. Maximal degree in co-relation 5567. Up to 1058 conditions per place. [2023-11-29 04:48:23,352 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 174 selfloop transitions, 21 changer transitions 5/234 dead transitions. [2023-11-29 04:48:23,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 234 transitions, 1676 flow [2023-11-29 04:48:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:48:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 357 transitions. [2023-11-29 04:48:23,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725609756097561 [2023-11-29 04:48:23,354 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 357 transitions. [2023-11-29 04:48:23,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 357 transitions. [2023-11-29 04:48:23,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:23,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 357 transitions. [2023-11-29 04:48:23,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.5) internal successors, (357), 6 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:23,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:23,357 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:23,357 INFO L175 Difference]: Start difference. First operand has 109 places, 140 transitions, 726 flow. Second operand 6 states and 357 transitions. [2023-11-29 04:48:23,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 234 transitions, 1676 flow [2023-11-29 04:48:23,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 234 transitions, 1512 flow, removed 54 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:23,367 INFO L231 Difference]: Finished difference. Result has 114 places, 151 transitions, 803 flow [2023-11-29 04:48:23,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=803, PETRI_PLACES=114, PETRI_TRANSITIONS=151} [2023-11-29 04:48:23,368 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 36 predicate places. [2023-11-29 04:48:23,368 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 151 transitions, 803 flow [2023-11-29 04:48:23,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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) [2023-11-29 04:48:23,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:23,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:23,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:48:23,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:48:23,569 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:23,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:23,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1030677750, now seen corresponding path program 1 times [2023-11-29 04:48:23,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:23,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911985519] [2023-11-29 04:48:23,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:23,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:23,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566226215] [2023-11-29 04:48:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:23,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:23,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:23,585 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:23,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:48:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:23,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:48:23,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:23,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911985519] [2023-11-29 04:48:23,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:23,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566226215] [2023-11-29 04:48:23,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566226215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:23,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:23,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:48:23,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32005317] [2023-11-29 04:48:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:23,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:48:23,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:23,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:48:23,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:23,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 04:48:23,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 151 transitions, 803 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2023-11-29 04:48:23,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:23,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 04:48:23,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:24,445 INFO L124 PetriNetUnfolderBase]: 1286/3675 cut-off events. [2023-11-29 04:48:24,445 INFO L125 PetriNetUnfolderBase]: For 3043/3047 co-relation queries the response was YES. [2023-11-29 04:48:24,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9705 conditions, 3675 events. 1286/3675 cut-off events. For 3043/3047 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 28727 event pairs, 720 based on Foata normal form. 2/3228 useless extension candidates. Maximal degree in co-relation 8780. Up to 1619 conditions per place. [2023-11-29 04:48:24,468 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 167 selfloop transitions, 28 changer transitions 1/230 dead transitions. [2023-11-29 04:48:24,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 230 transitions, 1655 flow [2023-11-29 04:48:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:48:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 343 transitions. [2023-11-29 04:48:24,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6971544715447154 [2023-11-29 04:48:24,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 343 transitions. [2023-11-29 04:48:24,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 343 transitions. [2023-11-29 04:48:24,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:24,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 343 transitions. [2023-11-29 04:48:24,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 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) [2023-11-29 04:48:24,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:24,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:24,473 INFO L175 Difference]: Start difference. First operand has 114 places, 151 transitions, 803 flow. Second operand 6 states and 343 transitions. [2023-11-29 04:48:24,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 230 transitions, 1655 flow [2023-11-29 04:48:24,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 230 transitions, 1653 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 04:48:24,487 INFO L231 Difference]: Finished difference. Result has 121 places, 165 transitions, 1017 flow [2023-11-29 04:48:24,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1017, PETRI_PLACES=121, PETRI_TRANSITIONS=165} [2023-11-29 04:48:24,487 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 43 predicate places. [2023-11-29 04:48:24,488 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 165 transitions, 1017 flow [2023-11-29 04:48:24,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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) [2023-11-29 04:48:24,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:24,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:24,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:48:24,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:24,689 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:24,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1030677717, now seen corresponding path program 1 times [2023-11-29 04:48:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392484327] [2023-11-29 04:48:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:24,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:24,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403316987] [2023-11-29 04:48:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:24,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:24,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:24,704 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:24,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:48:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:24,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:24,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:48:24,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:24,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:24,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392484327] [2023-11-29 04:48:24,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:24,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403316987] [2023-11-29 04:48:24,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403316987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:24,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:24,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:24,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359968505] [2023-11-29 04:48:24,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:24,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:24,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:24,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 165 transitions, 1017 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:24,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:24,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:24,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:25,362 INFO L124 PetriNetUnfolderBase]: 1410/3747 cut-off events. [2023-11-29 04:48:25,363 INFO L125 PetriNetUnfolderBase]: For 3765/3789 co-relation queries the response was YES. [2023-11-29 04:48:25,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10540 conditions, 3747 events. 1410/3747 cut-off events. For 3765/3789 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 28352 event pairs, 288 based on Foata normal form. 88/3440 useless extension candidates. Maximal degree in co-relation 9576. Up to 1495 conditions per place. [2023-11-29 04:48:25,377 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 149 selfloop transitions, 7 changer transitions 0/188 dead transitions. [2023-11-29 04:48:25,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 188 transitions, 1445 flow [2023-11-29 04:48:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2023-11-29 04:48:25,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2023-11-29 04:48:25,378 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 224 transitions. [2023-11-29 04:48:25,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 224 transitions. [2023-11-29 04:48:25,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:25,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 224 transitions. [2023-11-29 04:48:25,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2023-11-29 04:48:25,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:25,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:25,381 INFO L175 Difference]: Start difference. First operand has 121 places, 165 transitions, 1017 flow. Second operand 4 states and 224 transitions. [2023-11-29 04:48:25,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 188 transitions, 1445 flow [2023-11-29 04:48:25,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 188 transitions, 1409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:25,407 INFO L231 Difference]: Finished difference. Result has 122 places, 164 transitions, 993 flow [2023-11-29 04:48:25,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=993, PETRI_PLACES=122, PETRI_TRANSITIONS=164} [2023-11-29 04:48:25,408 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2023-11-29 04:48:25,408 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 164 transitions, 993 flow [2023-11-29 04:48:25,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:25,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:25,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:25,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 04:48:25,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:48:25,609 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:25,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1886237289, now seen corresponding path program 1 times [2023-11-29 04:48:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:25,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94596491] [2023-11-29 04:48:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:25,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:25,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558750709] [2023-11-29 04:48:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:25,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:25,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:25,640 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:25,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:48:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:25,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:25,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:48:25,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:25,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:25,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94596491] [2023-11-29 04:48:25,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558750709] [2023-11-29 04:48:25,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558750709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:25,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:25,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:25,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71588218] [2023-11-29 04:48:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:25,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:25,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:25,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 164 transitions, 993 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:25,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:25,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:25,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:26,436 INFO L124 PetriNetUnfolderBase]: 2038/5279 cut-off events. [2023-11-29 04:48:26,436 INFO L125 PetriNetUnfolderBase]: For 5391/5431 co-relation queries the response was YES. [2023-11-29 04:48:26,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14747 conditions, 5279 events. 2038/5279 cut-off events. For 5391/5431 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 42873 event pairs, 828 based on Foata normal form. 88/4896 useless extension candidates. Maximal degree in co-relation 13790. Up to 2775 conditions per place. [2023-11-29 04:48:26,462 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 158 selfloop transitions, 7 changer transitions 0/197 dead transitions. [2023-11-29 04:48:26,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 197 transitions, 1487 flow [2023-11-29 04:48:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2023-11-29 04:48:26,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7042682926829268 [2023-11-29 04:48:26,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 231 transitions. [2023-11-29 04:48:26,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 231 transitions. [2023-11-29 04:48:26,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:26,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 231 transitions. [2023-11-29 04:48:26,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2023-11-29 04:48:26,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:26,466 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:26,466 INFO L175 Difference]: Start difference. First operand has 122 places, 164 transitions, 993 flow. Second operand 4 states and 231 transitions. [2023-11-29 04:48:26,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 197 transitions, 1487 flow [2023-11-29 04:48:26,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 197 transitions, 1465 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:26,496 INFO L231 Difference]: Finished difference. Result has 124 places, 168 transitions, 1028 flow [2023-11-29 04:48:26,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=124, PETRI_TRANSITIONS=168} [2023-11-29 04:48:26,496 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 46 predicate places. [2023-11-29 04:48:26,496 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 168 transitions, 1028 flow [2023-11-29 04:48:26,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:26,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:26,497 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:26,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:48:26,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:48:26,697 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:26,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1780803408, now seen corresponding path program 2 times [2023-11-29 04:48:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:26,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008897587] [2023-11-29 04:48:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:26,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:26,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369061122] [2023-11-29 04:48:26,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:48:26,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:26,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:26,713 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:26,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:48:26,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:48:26,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:48:26,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:48:26,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:28,657 WARN L876 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2023-11-29 04:48:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 8 not checked. [2023-11-29 04:48:28,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:48:32,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008897587] [2023-11-29 04:48:32,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:32,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369061122] [2023-11-29 04:48:32,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369061122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:32,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:32,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 04:48:32,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844906794] [2023-11-29 04:48:32,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:32,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:32,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:32,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:32,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=11, Unknown=3, NotChecked=6, Total=30 [2023-11-29 04:48:32,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2023-11-29 04:48:32,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 168 transitions, 1028 flow. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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) [2023-11-29 04:48:32,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:32,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2023-11-29 04:48:32,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:34,127 INFO L124 PetriNetUnfolderBase]: 1914/5205 cut-off events. [2023-11-29 04:48:34,127 INFO L125 PetriNetUnfolderBase]: For 5913/5937 co-relation queries the response was YES. [2023-11-29 04:48:34,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 5205 events. 1914/5205 cut-off events. For 5913/5937 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 43278 event pairs, 1206 based on Foata normal form. 2/4740 useless extension candidates. Maximal degree in co-relation 13982. Up to 3779 conditions per place. [2023-11-29 04:48:34,151 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 124 selfloop transitions, 16 changer transitions 0/167 dead transitions. [2023-11-29 04:48:34,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 167 transitions, 1298 flow [2023-11-29 04:48:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2023-11-29 04:48:34,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670731707317073 [2023-11-29 04:48:34,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 186 transitions. [2023-11-29 04:48:34,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 186 transitions. [2023-11-29 04:48:34,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:34,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 186 transitions. [2023-11-29 04:48:34,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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) [2023-11-29 04:48:34,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:34,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:34,155 INFO L175 Difference]: Start difference. First operand has 124 places, 168 transitions, 1028 flow. Second operand 4 states and 186 transitions. [2023-11-29 04:48:34,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 167 transitions, 1298 flow [2023-11-29 04:48:34,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 167 transitions, 1293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:34,174 INFO L231 Difference]: Finished difference. Result has 125 places, 167 transitions, 1045 flow [2023-11-29 04:48:34,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1045, PETRI_PLACES=125, PETRI_TRANSITIONS=167} [2023-11-29 04:48:34,175 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2023-11-29 04:48:34,175 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 167 transitions, 1045 flow [2023-11-29 04:48:34,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 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) [2023-11-29 04:48:34,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:34,175 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:34,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:34,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:48:34,376 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:34,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:34,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1410834035, now seen corresponding path program 1 times [2023-11-29 04:48:34,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:34,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324251120] [2023-11-29 04:48:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:34,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:34,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254007524] [2023-11-29 04:48:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:34,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:34,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:34,395 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:34,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:48:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:34,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:48:34,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 04:48:34,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:34,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324251120] [2023-11-29 04:48:34,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:34,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254007524] [2023-11-29 04:48:34,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254007524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:34,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:34,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:34,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306159087] [2023-11-29 04:48:34,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:34,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:34,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 04:48:34,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 167 transitions, 1045 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2023-11-29 04:48:34,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:34,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 04:48:34,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:35,293 INFO L124 PetriNetUnfolderBase]: 1904/5145 cut-off events. [2023-11-29 04:48:35,293 INFO L125 PetriNetUnfolderBase]: For 5723/5755 co-relation queries the response was YES. [2023-11-29 04:48:35,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14401 conditions, 5145 events. 1904/5145 cut-off events. For 5723/5755 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 42686 event pairs, 1206 based on Foata normal form. 2/4672 useless extension candidates. Maximal degree in co-relation 13442. Up to 3517 conditions per place. [2023-11-29 04:48:35,313 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 124 selfloop transitions, 10 changer transitions 0/166 dead transitions. [2023-11-29 04:48:35,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 166 transitions, 1304 flow [2023-11-29 04:48:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2023-11-29 04:48:35,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2023-11-29 04:48:35,315 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 224 transitions. [2023-11-29 04:48:35,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 224 transitions. [2023-11-29 04:48:35,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:35,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 224 transitions. [2023-11-29 04:48:35,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2023-11-29 04:48:35,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:35,316 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:35,316 INFO L175 Difference]: Start difference. First operand has 125 places, 167 transitions, 1045 flow. Second operand 4 states and 224 transitions. [2023-11-29 04:48:35,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 166 transitions, 1304 flow [2023-11-29 04:48:35,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 166 transitions, 1272 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:35,335 INFO L231 Difference]: Finished difference. Result has 126 places, 166 transitions, 1028 flow [2023-11-29 04:48:35,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=126, PETRI_TRANSITIONS=166} [2023-11-29 04:48:35,335 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 48 predicate places. [2023-11-29 04:48:35,335 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 166 transitions, 1028 flow [2023-11-29 04:48:35,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2023-11-29 04:48:35,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:35,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:35,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 04:48:35,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:35,536 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:35,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash -151806895, now seen corresponding path program 1 times [2023-11-29 04:48:35,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:35,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309815039] [2023-11-29 04:48:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:35,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:35,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:35,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136843704] [2023-11-29 04:48:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:35,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:35,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:35,552 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:35,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:48:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:35,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:48:35,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:35,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:35,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309815039] [2023-11-29 04:48:35,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:35,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136843704] [2023-11-29 04:48:35,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136843704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:35,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:35,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 04:48:35,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290451553] [2023-11-29 04:48:35,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:48:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:35,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:48:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:48:35,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:35,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 166 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 45.1) internal successors, (451), 10 states have internal predecessors, (451), 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) [2023-11-29 04:48:35,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:35,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:35,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:36,856 INFO L124 PetriNetUnfolderBase]: 3350/7259 cut-off events. [2023-11-29 04:48:36,856 INFO L125 PetriNetUnfolderBase]: For 7511/7567 co-relation queries the response was YES. [2023-11-29 04:48:36,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20956 conditions, 7259 events. 3350/7259 cut-off events. For 7511/7567 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 54762 event pairs, 930 based on Foata normal form. 0/6492 useless extension candidates. Maximal degree in co-relation 19996. Up to 3313 conditions per place. [2023-11-29 04:48:36,893 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 281 selfloop transitions, 15 changer transitions 0/327 dead transitions. [2023-11-29 04:48:36,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 327 transitions, 2480 flow [2023-11-29 04:48:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:48:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:48:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 570 transitions. [2023-11-29 04:48:36,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2023-11-29 04:48:36,896 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 570 transitions. [2023-11-29 04:48:36,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 570 transitions. [2023-11-29 04:48:36,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:36,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 570 transitions. [2023-11-29 04:48:36,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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) [2023-11-29 04:48:36,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:48:36,901 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:48:36,901 INFO L175 Difference]: Start difference. First operand has 126 places, 166 transitions, 1028 flow. Second operand 10 states and 570 transitions. [2023-11-29 04:48:36,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 327 transitions, 2480 flow [2023-11-29 04:48:36,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 327 transitions, 2462 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:48:36,937 INFO L231 Difference]: Finished difference. Result has 136 places, 175 transitions, 1094 flow [2023-11-29 04:48:36,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1094, PETRI_PLACES=136, PETRI_TRANSITIONS=175} [2023-11-29 04:48:36,937 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 58 predicate places. [2023-11-29 04:48:36,937 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 175 transitions, 1094 flow [2023-11-29 04:48:36,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.1) internal successors, (451), 10 states have internal predecessors, (451), 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) [2023-11-29 04:48:36,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:36,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:36,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:48:37,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:37,139 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:37,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1552496857, now seen corresponding path program 1 times [2023-11-29 04:48:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648060148] [2023-11-29 04:48:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:37,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:37,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855182168] [2023-11-29 04:48:37,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:37,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:37,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:37,159 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:37,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:48:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:37,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:48:37,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:48:37,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648060148] [2023-11-29 04:48:37,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855182168] [2023-11-29 04:48:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855182168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:37,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178610718] [2023-11-29 04:48:37,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:48:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:48:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:37,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 82 [2023-11-29 04:48:37,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 175 transitions, 1094 flow. Second operand has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 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) [2023-11-29 04:48:37,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:37,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 82 [2023-11-29 04:48:37,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:37,977 INFO L124 PetriNetUnfolderBase]: 1772/4167 cut-off events. [2023-11-29 04:48:37,977 INFO L125 PetriNetUnfolderBase]: For 6924/6936 co-relation queries the response was YES. [2023-11-29 04:48:37,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13113 conditions, 4167 events. 1772/4167 cut-off events. For 6924/6936 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 29415 event pairs, 1146 based on Foata normal form. 2/3899 useless extension candidates. Maximal degree in co-relation 12616. Up to 2722 conditions per place. [2023-11-29 04:48:37,994 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 182 selfloop transitions, 9 changer transitions 13/235 dead transitions. [2023-11-29 04:48:37,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 235 transitions, 1861 flow [2023-11-29 04:48:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:48:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2023-11-29 04:48:37,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2023-11-29 04:48:37,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 300 transitions. [2023-11-29 04:48:37,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 300 transitions. [2023-11-29 04:48:37,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:37,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 300 transitions. [2023-11-29 04:48:37,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2023-11-29 04:48:37,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:37,997 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:48:37,997 INFO L175 Difference]: Start difference. First operand has 136 places, 175 transitions, 1094 flow. Second operand 6 states and 300 transitions. [2023-11-29 04:48:37,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 235 transitions, 1861 flow [2023-11-29 04:48:38,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 235 transitions, 1793 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:38,012 INFO L231 Difference]: Finished difference. Result has 140 places, 180 transitions, 1137 flow [2023-11-29 04:48:38,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1137, PETRI_PLACES=140, PETRI_TRANSITIONS=180} [2023-11-29 04:48:38,013 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 62 predicate places. [2023-11-29 04:48:38,013 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 180 transitions, 1137 flow [2023-11-29 04:48:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 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) [2023-11-29 04:48:38,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:38,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:38,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 04:48:38,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 04:48:38,214 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:38,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1168674203, now seen corresponding path program 1 times [2023-11-29 04:48:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:38,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785767843] [2023-11-29 04:48:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:38,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:38,230 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:38,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527708120] [2023-11-29 04:48:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:38,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:38,232 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:38,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 04:48:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:38,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:38,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:38,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785767843] [2023-11-29 04:48:38,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:38,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527708120] [2023-11-29 04:48:38,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527708120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:38,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:38,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:38,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998043050] [2023-11-29 04:48:38,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:38,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:38,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:38,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:38,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:38,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:38,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 180 transitions, 1137 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-29 04:48:38,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:38,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:38,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:38,961 INFO L124 PetriNetUnfolderBase]: 1857/4269 cut-off events. [2023-11-29 04:48:38,961 INFO L125 PetriNetUnfolderBase]: For 4640/4652 co-relation queries the response was YES. [2023-11-29 04:48:38,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 4269 events. 1857/4269 cut-off events. For 4640/4652 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 29690 event pairs, 771 based on Foata normal form. 68/4133 useless extension candidates. Maximal degree in co-relation 11801. Up to 2274 conditions per place. [2023-11-29 04:48:38,982 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 171 selfloop transitions, 5 changer transitions 0/206 dead transitions. [2023-11-29 04:48:38,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 206 transitions, 1614 flow [2023-11-29 04:48:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:48:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-11-29 04:48:38,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7439024390243902 [2023-11-29 04:48:38,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-11-29 04:48:38,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-11-29 04:48:38,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:38,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-11-29 04:48:38,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-11-29 04:48:38,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-29 04:48:38,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-29 04:48:38,985 INFO L175 Difference]: Start difference. First operand has 140 places, 180 transitions, 1137 flow. Second operand 3 states and 183 transitions. [2023-11-29 04:48:38,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 206 transitions, 1614 flow [2023-11-29 04:48:39,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 206 transitions, 1607 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:39,004 INFO L231 Difference]: Finished difference. Result has 140 places, 180 transitions, 1149 flow [2023-11-29 04:48:39,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1149, PETRI_PLACES=140, PETRI_TRANSITIONS=180} [2023-11-29 04:48:39,005 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 62 predicate places. [2023-11-29 04:48:39,005 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 180 transitions, 1149 flow [2023-11-29 04:48:39,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-11-29 04:48:39,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:39,006 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:39,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 04:48:39,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 04:48:39,206 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:39,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1135315634, now seen corresponding path program 1 times [2023-11-29 04:48:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611127226] [2023-11-29 04:48:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:39,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:39,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311325886] [2023-11-29 04:48:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:39,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:39,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:39,226 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:39,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 04:48:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:39,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:48:39,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 04:48:39,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 04:48:39,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:39,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611127226] [2023-11-29 04:48:39,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:39,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311325886] [2023-11-29 04:48:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311325886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:39,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:39,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 04:48:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156024837] [2023-11-29 04:48:39,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:48:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:39,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:48:39,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:48:39,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:48:39,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 180 transitions, 1149 flow. Second operand has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 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) [2023-11-29 04:48:39,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:39,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:48:39,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:40,451 INFO L124 PetriNetUnfolderBase]: 2037/4449 cut-off events. [2023-11-29 04:48:40,452 INFO L125 PetriNetUnfolderBase]: For 8202/8222 co-relation queries the response was YES. [2023-11-29 04:48:40,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14274 conditions, 4449 events. 2037/4449 cut-off events. For 8202/8222 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 30207 event pairs, 1332 based on Foata normal form. 2/4295 useless extension candidates. Maximal degree in co-relation 13768. Up to 2814 conditions per place. [2023-11-29 04:48:40,473 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 127 selfloop transitions, 49 changer transitions 10/216 dead transitions. [2023-11-29 04:48:40,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 216 transitions, 1740 flow [2023-11-29 04:48:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:48:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:48:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 500 transitions. [2023-11-29 04:48:40,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543237250554324 [2023-11-29 04:48:40,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 500 transitions. [2023-11-29 04:48:40,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 500 transitions. [2023-11-29 04:48:40,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:40,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 500 transitions. [2023-11-29 04:48:40,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 45.45454545454545) internal successors, (500), 11 states have internal predecessors, (500), 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) [2023-11-29 04:48:40,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2023-11-29 04:48:40,478 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2023-11-29 04:48:40,478 INFO L175 Difference]: Start difference. First operand has 140 places, 180 transitions, 1149 flow. Second operand 11 states and 500 transitions. [2023-11-29 04:48:40,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 216 transitions, 1740 flow [2023-11-29 04:48:40,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 216 transitions, 1726 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:48:40,497 INFO L231 Difference]: Finished difference. Result has 150 places, 187 transitions, 1322 flow [2023-11-29 04:48:40,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1322, PETRI_PLACES=150, PETRI_TRANSITIONS=187} [2023-11-29 04:48:40,498 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 72 predicate places. [2023-11-29 04:48:40,498 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 187 transitions, 1322 flow [2023-11-29 04:48:40,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 40.357142857142854) internal successors, (565), 14 states have internal predecessors, (565), 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) [2023-11-29 04:48:40,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:40,498 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:40,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 04:48:40,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 04:48:40,698 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:40,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:40,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1893478083, now seen corresponding path program 1 times [2023-11-29 04:48:40,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:40,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518152617] [2023-11-29 04:48:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:40,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:40,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242531769] [2023-11-29 04:48:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:40,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:40,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:40,715 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:40,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 04:48:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:40,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:48:40,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:40,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:41,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518152617] [2023-11-29 04:48:41,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242531769] [2023-11-29 04:48:41,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242531769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:41,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:41,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-29 04:48:41,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297736968] [2023-11-29 04:48:41,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 04:48:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 04:48:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:48:41,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:48:41,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 187 transitions, 1322 flow. Second operand has 22 states, 22 states have (on average 40.27272727272727) internal successors, (886), 22 states have internal predecessors, (886), 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) [2023-11-29 04:48:41,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:41,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:48:41,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:42,066 INFO L124 PetriNetUnfolderBase]: 2169/5201 cut-off events. [2023-11-29 04:48:42,066 INFO L125 PetriNetUnfolderBase]: For 9082/9086 co-relation queries the response was YES. [2023-11-29 04:48:42,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16249 conditions, 5201 events. 2169/5201 cut-off events. For 9082/9086 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 37759 event pairs, 1332 based on Foata normal form. 120/5124 useless extension candidates. Maximal degree in co-relation 15267. Up to 3460 conditions per place. [2023-11-29 04:48:42,089 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 73 selfloop transitions, 168 changer transitions 0/271 dead transitions. [2023-11-29 04:48:42,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 271 transitions, 2416 flow [2023-11-29 04:48:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:48:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 04:48:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 998 transitions. [2023-11-29 04:48:42,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532150776053215 [2023-11-29 04:48:42,091 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 998 transitions. [2023-11-29 04:48:42,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 998 transitions. [2023-11-29 04:48:42,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:42,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 998 transitions. [2023-11-29 04:48:42,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 45.36363636363637) internal successors, (998), 22 states have internal predecessors, (998), 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) [2023-11-29 04:48:42,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 82.0) internal successors, (1886), 23 states have internal predecessors, (1886), 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) [2023-11-29 04:48:42,095 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 82.0) internal successors, (1886), 23 states have internal predecessors, (1886), 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) [2023-11-29 04:48:42,095 INFO L175 Difference]: Start difference. First operand has 150 places, 187 transitions, 1322 flow. Second operand 22 states and 998 transitions. [2023-11-29 04:48:42,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 271 transitions, 2416 flow [2023-11-29 04:48:42,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 271 transitions, 2391 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:42,117 INFO L231 Difference]: Finished difference. Result has 174 places, 271 transitions, 2331 flow [2023-11-29 04:48:42,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2331, PETRI_PLACES=174, PETRI_TRANSITIONS=271} [2023-11-29 04:48:42,117 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 96 predicate places. [2023-11-29 04:48:42,117 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 271 transitions, 2331 flow [2023-11-29 04:48:42,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 40.27272727272727) internal successors, (886), 22 states have internal predecessors, (886), 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) [2023-11-29 04:48:42,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:42,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:42,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:42,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 04:48:42,318 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:42,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:42,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1705030286, now seen corresponding path program 1 times [2023-11-29 04:48:42,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:42,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827776067] [2023-11-29 04:48:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:42,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:42,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274188837] [2023-11-29 04:48:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:42,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:42,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:42,333 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:42,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 04:48:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:42,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:48:42,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:42,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:42,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:42,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827776067] [2023-11-29 04:48:42,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:42,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274188837] [2023-11-29 04:48:42,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274188837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:42,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:42,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-29 04:48:42,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185522454] [2023-11-29 04:48:42,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:42,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:48:42,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:48:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:48:42,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 82 [2023-11-29 04:48:42,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 271 transitions, 2331 flow. Second operand has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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) [2023-11-29 04:48:42,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:42,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 82 [2023-11-29 04:48:42,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:44,092 INFO L124 PetriNetUnfolderBase]: 3265/7275 cut-off events. [2023-11-29 04:48:44,092 INFO L125 PetriNetUnfolderBase]: For 11934/11946 co-relation queries the response was YES. [2023-11-29 04:48:44,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23436 conditions, 7275 events. 3265/7275 cut-off events. For 11934/11946 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 53911 event pairs, 1527 based on Foata normal form. 68/6974 useless extension candidates. Maximal degree in co-relation 22511. Up to 2975 conditions per place. [2023-11-29 04:48:44,126 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 346 selfloop transitions, 50 changer transitions 0/424 dead transitions. [2023-11-29 04:48:44,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 424 transitions, 4175 flow [2023-11-29 04:48:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:48:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:48:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 428 transitions. [2023-11-29 04:48:44,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799457994579946 [2023-11-29 04:48:44,128 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 428 transitions. [2023-11-29 04:48:44,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 428 transitions. [2023-11-29 04:48:44,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:44,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 428 transitions. [2023-11-29 04:48:44,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 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) [2023-11-29 04:48:44,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2023-11-29 04:48:44,129 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2023-11-29 04:48:44,130 INFO L175 Difference]: Start difference. First operand has 174 places, 271 transitions, 2331 flow. Second operand 9 states and 428 transitions. [2023-11-29 04:48:44,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 424 transitions, 4175 flow [2023-11-29 04:48:44,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 424 transitions, 3647 flow, removed 149 selfloop flow, removed 9 redundant places. [2023-11-29 04:48:44,175 INFO L231 Difference]: Finished difference. Result has 177 places, 277 transitions, 2111 flow [2023-11-29 04:48:44,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2111, PETRI_PLACES=177, PETRI_TRANSITIONS=277} [2023-11-29 04:48:44,175 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 99 predicate places. [2023-11-29 04:48:44,176 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 277 transitions, 2111 flow [2023-11-29 04:48:44,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.083333333333336) internal successors, (469), 12 states have internal predecessors, (469), 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) [2023-11-29 04:48:44,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:44,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:44,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 04:48:44,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 04:48:44,376 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:44,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2109472479, now seen corresponding path program 1 times [2023-11-29 04:48:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:44,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332318194] [2023-11-29 04:48:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:44,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028372047] [2023-11-29 04:48:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:44,391 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:44,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 04:48:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:44,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:44,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:44,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:44,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332318194] [2023-11-29 04:48:44,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028372047] [2023-11-29 04:48:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028372047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:44,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:44,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301241252] [2023-11-29 04:48:44,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:44,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2023-11-29 04:48:44,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 277 transitions, 2111 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-29 04:48:44,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:44,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2023-11-29 04:48:44,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:45,959 INFO L124 PetriNetUnfolderBase]: 4357/9587 cut-off events. [2023-11-29 04:48:45,959 INFO L125 PetriNetUnfolderBase]: For 18368/18428 co-relation queries the response was YES. [2023-11-29 04:48:45,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29916 conditions, 9587 events. 4357/9587 cut-off events. For 18368/18428 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 73141 event pairs, 2175 based on Foata normal form. 102/9314 useless extension candidates. Maximal degree in co-relation 29115. Up to 5874 conditions per place. [2023-11-29 04:48:46,011 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 290 selfloop transitions, 10 changer transitions 0/328 dead transitions. [2023-11-29 04:48:46,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 328 transitions, 2963 flow [2023-11-29 04:48:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2023-11-29 04:48:46,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6890243902439024 [2023-11-29 04:48:46,012 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 226 transitions. [2023-11-29 04:48:46,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 226 transitions. [2023-11-29 04:48:46,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:46,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 226 transitions. [2023-11-29 04:48:46,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2023-11-29 04:48:46,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:46,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:46,013 INFO L175 Difference]: Start difference. First operand has 177 places, 277 transitions, 2111 flow. Second operand 4 states and 226 transitions. [2023-11-29 04:48:46,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 328 transitions, 2963 flow [2023-11-29 04:48:46,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 328 transitions, 2878 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-29 04:48:46,072 INFO L231 Difference]: Finished difference. Result has 178 places, 282 transitions, 2101 flow [2023-11-29 04:48:46,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2026, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2101, PETRI_PLACES=178, PETRI_TRANSITIONS=282} [2023-11-29 04:48:46,073 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 100 predicate places. [2023-11-29 04:48:46,073 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 282 transitions, 2101 flow [2023-11-29 04:48:46,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-29 04:48:46,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:46,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:46,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 04:48:46,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 04:48:46,274 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:46,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:46,274 INFO L85 PathProgramCache]: Analyzing trace with hash 969138279, now seen corresponding path program 1 times [2023-11-29 04:48:46,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:46,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292642250] [2023-11-29 04:48:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:46,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:46,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:46,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170791110] [2023-11-29 04:48:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:46,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:46,288 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:46,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 04:48:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:46,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:46,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:46,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:46,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:46,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292642250] [2023-11-29 04:48:46,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:46,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170791110] [2023-11-29 04:48:46,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170791110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:46,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:46,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:46,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179123077] [2023-11-29 04:48:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:46,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:46,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:46,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:46,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2023-11-29 04:48:46,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 282 transitions, 2101 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-29 04:48:46,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:46,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2023-11-29 04:48:46,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:48,099 INFO L124 PetriNetUnfolderBase]: 4357/9485 cut-off events. [2023-11-29 04:48:48,099 INFO L125 PetriNetUnfolderBase]: For 20479/20539 co-relation queries the response was YES. [2023-11-29 04:48:48,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31053 conditions, 9485 events. 4357/9485 cut-off events. For 20479/20539 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 71455 event pairs, 2175 based on Foata normal form. 0/9008 useless extension candidates. Maximal degree in co-relation 30254. Up to 5874 conditions per place. [2023-11-29 04:48:48,169 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 289 selfloop transitions, 11 changer transitions 0/329 dead transitions. [2023-11-29 04:48:48,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 329 transitions, 2923 flow [2023-11-29 04:48:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2023-11-29 04:48:48,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6890243902439024 [2023-11-29 04:48:48,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 226 transitions. [2023-11-29 04:48:48,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 226 transitions. [2023-11-29 04:48:48,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:48,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 226 transitions. [2023-11-29 04:48:48,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2023-11-29 04:48:48,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:48,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:48,172 INFO L175 Difference]: Start difference. First operand has 178 places, 282 transitions, 2101 flow. Second operand 4 states and 226 transitions. [2023-11-29 04:48:48,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 329 transitions, 2923 flow [2023-11-29 04:48:48,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 329 transitions, 2914 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:48,249 INFO L231 Difference]: Finished difference. Result has 182 places, 284 transitions, 2139 flow [2023-11-29 04:48:48,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2139, PETRI_PLACES=182, PETRI_TRANSITIONS=284} [2023-11-29 04:48:48,249 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 104 predicate places. [2023-11-29 04:48:48,250 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 284 transitions, 2139 flow [2023-11-29 04:48:48,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-29 04:48:48,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:48,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:48,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 04:48:48,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 04:48:48,450 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:48,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:48,451 INFO L85 PathProgramCache]: Analyzing trace with hash -21483551, now seen corresponding path program 1 times [2023-11-29 04:48:48,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:48,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539952082] [2023-11-29 04:48:48,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:48,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928774784] [2023-11-29 04:48:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:48,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:48,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:48,470 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:48,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 04:48:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:48,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:48,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:48,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:48,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:48,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539952082] [2023-11-29 04:48:48,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:48,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928774784] [2023-11-29 04:48:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928774784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:48,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230847833] [2023-11-29 04:48:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:48,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:48,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:48,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:48,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:48,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 284 transitions, 2139 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:48:48,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:48,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:48,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:50,177 INFO L124 PetriNetUnfolderBase]: 3972/8872 cut-off events. [2023-11-29 04:48:50,177 INFO L125 PetriNetUnfolderBase]: For 21235/21293 co-relation queries the response was YES. [2023-11-29 04:48:50,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30395 conditions, 8872 events. 3972/8872 cut-off events. For 21235/21293 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 67413 event pairs, 1410 based on Foata normal form. 204/8919 useless extension candidates. Maximal degree in co-relation 29594. Up to 4259 conditions per place. [2023-11-29 04:48:50,234 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 278 selfloop transitions, 14 changer transitions 0/325 dead transitions. [2023-11-29 04:48:50,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 325 transitions, 2927 flow [2023-11-29 04:48:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2023-11-29 04:48:50,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2023-11-29 04:48:50,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 224 transitions. [2023-11-29 04:48:50,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 224 transitions. [2023-11-29 04:48:50,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:50,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 224 transitions. [2023-11-29 04:48:50,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2023-11-29 04:48:50,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:50,237 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:50,237 INFO L175 Difference]: Start difference. First operand has 182 places, 284 transitions, 2139 flow. Second operand 4 states and 224 transitions. [2023-11-29 04:48:50,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 325 transitions, 2927 flow [2023-11-29 04:48:50,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 325 transitions, 2918 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:48:50,316 INFO L231 Difference]: Finished difference. Result has 183 places, 283 transitions, 2156 flow [2023-11-29 04:48:50,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2156, PETRI_PLACES=183, PETRI_TRANSITIONS=283} [2023-11-29 04:48:50,317 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 105 predicate places. [2023-11-29 04:48:50,317 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 283 transitions, 2156 flow [2023-11-29 04:48:50,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:48:50,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:50,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:50,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 04:48:50,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:48:50,518 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:50,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash -665989207, now seen corresponding path program 1 times [2023-11-29 04:48:50,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:50,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618793503] [2023-11-29 04:48:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:50,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:50,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:50,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479539641] [2023-11-29 04:48:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:50,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:50,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:50,533 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:50,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 04:48:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:50,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:48:50,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:50,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:48:50,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618793503] [2023-11-29 04:48:50,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479539641] [2023-11-29 04:48:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479539641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:50,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:50,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:50,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889279548] [2023-11-29 04:48:50,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:50,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:50,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:50,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 283 transitions, 2156 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:48:50,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:50,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:50,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:52,007 INFO L124 PetriNetUnfolderBase]: 3807/8629 cut-off events. [2023-11-29 04:48:52,008 INFO L125 PetriNetUnfolderBase]: For 22007/22047 co-relation queries the response was YES. [2023-11-29 04:48:52,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30341 conditions, 8629 events. 3807/8629 cut-off events. For 22007/22047 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 65779 event pairs, 1950 based on Foata normal form. 102/8580 useless extension candidates. Maximal degree in co-relation 29540. Up to 5429 conditions per place. [2023-11-29 04:48:52,067 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 284 selfloop transitions, 10 changer transitions 0/327 dead transitions. [2023-11-29 04:48:52,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 327 transitions, 2958 flow [2023-11-29 04:48:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:48:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2023-11-29 04:48:52,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2023-11-29 04:48:52,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2023-11-29 04:48:52,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2023-11-29 04:48:52,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:52,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2023-11-29 04:48:52,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-29 04:48:52,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:52,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:48:52,070 INFO L175 Difference]: Start difference. First operand has 183 places, 283 transitions, 2156 flow. Second operand 4 states and 228 transitions. [2023-11-29 04:48:52,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 327 transitions, 2958 flow [2023-11-29 04:48:52,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 327 transitions, 2928 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:52,152 INFO L231 Difference]: Finished difference. Result has 185 places, 284 transitions, 2165 flow [2023-11-29 04:48:52,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2165, PETRI_PLACES=185, PETRI_TRANSITIONS=284} [2023-11-29 04:48:52,153 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 107 predicate places. [2023-11-29 04:48:52,153 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 284 transitions, 2165 flow [2023-11-29 04:48:52,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-11-29 04:48:52,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:52,154 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:52,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:52,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:52,354 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:52,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1017938864, now seen corresponding path program 1 times [2023-11-29 04:48:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650604170] [2023-11-29 04:48:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:52,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:52,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690214185] [2023-11-29 04:48:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:52,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:52,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:52,370 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:52,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 04:48:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:52,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:48:52,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:52,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:52,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:52,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650604170] [2023-11-29 04:48:52,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:52,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690214185] [2023-11-29 04:48:52,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690214185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:52,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:52,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-29 04:48:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001343574] [2023-11-29 04:48:52,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:52,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 04:48:52,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 04:48:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:48:52,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:52,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 284 transitions, 2165 flow. Second operand has 22 states, 22 states have (on average 44.68181818181818) internal successors, (983), 22 states have internal predecessors, (983), 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) [2023-11-29 04:48:52,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:52,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:52,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:54,449 INFO L124 PetriNetUnfolderBase]: 3930/9534 cut-off events. [2023-11-29 04:48:54,449 INFO L125 PetriNetUnfolderBase]: For 27099/27115 co-relation queries the response was YES. [2023-11-29 04:48:54,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34285 conditions, 9534 events. 3930/9534 cut-off events. For 27099/27115 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 73295 event pairs, 2355 based on Foata normal form. 24/9389 useless extension candidates. Maximal degree in co-relation 32642. Up to 5744 conditions per place. [2023-11-29 04:48:54,524 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 448 selfloop transitions, 184 changer transitions 0/665 dead transitions. [2023-11-29 04:48:54,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 665 transitions, 6507 flow [2023-11-29 04:48:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:48:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 04:48:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1049 transitions. [2023-11-29 04:48:54,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814855875831486 [2023-11-29 04:48:54,526 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1049 transitions. [2023-11-29 04:48:54,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1049 transitions. [2023-11-29 04:48:54,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:54,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1049 transitions. [2023-11-29 04:48:54,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 47.68181818181818) internal successors, (1049), 22 states have internal predecessors, (1049), 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) [2023-11-29 04:48:54,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 82.0) internal successors, (1886), 23 states have internal predecessors, (1886), 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) [2023-11-29 04:48:54,529 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 82.0) internal successors, (1886), 23 states have internal predecessors, (1886), 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) [2023-11-29 04:48:54,529 INFO L175 Difference]: Start difference. First operand has 185 places, 284 transitions, 2165 flow. Second operand 22 states and 1049 transitions. [2023-11-29 04:48:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 665 transitions, 6507 flow [2023-11-29 04:48:54,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 665 transitions, 6493 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:54,632 INFO L231 Difference]: Finished difference. Result has 209 places, 380 transitions, 3361 flow [2023-11-29 04:48:54,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3361, PETRI_PLACES=209, PETRI_TRANSITIONS=380} [2023-11-29 04:48:54,633 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 131 predicate places. [2023-11-29 04:48:54,633 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 380 transitions, 3361 flow [2023-11-29 04:48:54,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 44.68181818181818) internal successors, (983), 22 states have internal predecessors, (983), 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) [2023-11-29 04:48:54,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:54,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:54,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 04:48:54,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:54,834 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:54,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:54,834 INFO L85 PathProgramCache]: Analyzing trace with hash -251358269, now seen corresponding path program 2 times [2023-11-29 04:48:54,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:54,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855778293] [2023-11-29 04:48:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:54,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:54,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:54,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389899568] [2023-11-29 04:48:54,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:48:54,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:54,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:54,848 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:54,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 04:48:54,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:48:54,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:48:54,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:48:54,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 04:48:55,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 04:48:55,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855778293] [2023-11-29 04:48:55,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389899568] [2023-11-29 04:48:55,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389899568] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:55,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:55,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-29 04:48:55,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898140234] [2023-11-29 04:48:55,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:55,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:48:55,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:48:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:55,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2023-11-29 04:48:55,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 380 transitions, 3361 flow. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:55,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:55,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2023-11-29 04:48:55,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:56,650 INFO L124 PetriNetUnfolderBase]: 3930/9500 cut-off events. [2023-11-29 04:48:56,651 INFO L125 PetriNetUnfolderBase]: For 22903/22949 co-relation queries the response was YES. [2023-11-29 04:48:56,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 9500 events. 3930/9500 cut-off events. For 22903/22949 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 72858 event pairs, 807 based on Foata normal form. 0/9361 useless extension candidates. Maximal degree in co-relation 33087. Up to 3825 conditions per place. [2023-11-29 04:48:56,729 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 369 selfloop transitions, 21 changer transitions 0/423 dead transitions. [2023-11-29 04:48:56,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 423 transitions, 4373 flow [2023-11-29 04:48:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:48:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2023-11-29 04:48:56,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6292682926829268 [2023-11-29 04:48:56,730 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 258 transitions. [2023-11-29 04:48:56,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 258 transitions. [2023-11-29 04:48:56,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:56,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 258 transitions. [2023-11-29 04:48:56,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 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) [2023-11-29 04:48:56,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:56,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:48:56,810 INFO L175 Difference]: Start difference. First operand has 209 places, 380 transitions, 3361 flow. Second operand 5 states and 258 transitions. [2023-11-29 04:48:56,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 423 transitions, 4373 flow [2023-11-29 04:48:56,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 423 transitions, 3961 flow, removed 118 selfloop flow, removed 9 redundant places. [2023-11-29 04:48:56,938 INFO L231 Difference]: Finished difference. Result has 204 places, 381 transitions, 3033 flow [2023-11-29 04:48:56,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3033, PETRI_PLACES=204, PETRI_TRANSITIONS=381} [2023-11-29 04:48:56,938 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 126 predicate places. [2023-11-29 04:48:56,938 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 381 transitions, 3033 flow [2023-11-29 04:48:56,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:56,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:56,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:56,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 04:48:57,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:57,139 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:57,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2089263383, now seen corresponding path program 1 times [2023-11-29 04:48:57,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:57,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002025448] [2023-11-29 04:48:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:57,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:57,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:57,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463399257] [2023-11-29 04:48:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:57,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:57,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:57,153 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:57,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 04:48:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:57,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:48:57,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:48:57,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:48:57,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:57,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002025448] [2023-11-29 04:48:57,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:48:57,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463399257] [2023-11-29 04:48:57,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463399257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:57,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:48:57,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-29 04:48:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089717288] [2023-11-29 04:48:57,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:57,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:57,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:57,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:48:57,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 381 transitions, 3033 flow. Second operand has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 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) [2023-11-29 04:48:57,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:48:57,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:48:57,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:48:59,281 INFO L124 PetriNetUnfolderBase]: 3794/9424 cut-off events. [2023-11-29 04:48:59,281 INFO L125 PetriNetUnfolderBase]: For 29090/29136 co-relation queries the response was YES. [2023-11-29 04:48:59,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 9424 events. 3794/9424 cut-off events. For 29090/29136 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 73612 event pairs, 960 based on Foata normal form. 136/9421 useless extension candidates. Maximal degree in co-relation 33190. Up to 2728 conditions per place. [2023-11-29 04:48:59,348 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 394 selfloop transitions, 38 changer transitions 10/475 dead transitions. [2023-11-29 04:48:59,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 475 transitions, 4418 flow [2023-11-29 04:48:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:48:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:48:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 377 transitions. [2023-11-29 04:48:59,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6567944250871081 [2023-11-29 04:48:59,349 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 377 transitions. [2023-11-29 04:48:59,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 377 transitions. [2023-11-29 04:48:59,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:48:59,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 377 transitions. [2023-11-29 04:48:59,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 53.857142857142854) internal successors, (377), 7 states have internal predecessors, (377), 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) [2023-11-29 04:48:59,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2023-11-29 04:48:59,352 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2023-11-29 04:48:59,352 INFO L175 Difference]: Start difference. First operand has 204 places, 381 transitions, 3033 flow. Second operand 7 states and 377 transitions. [2023-11-29 04:48:59,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 475 transitions, 4418 flow [2023-11-29 04:48:59,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 475 transitions, 4386 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 04:48:59,497 INFO L231 Difference]: Finished difference. Result has 208 places, 380 transitions, 3095 flow [2023-11-29 04:48:59,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3095, PETRI_PLACES=208, PETRI_TRANSITIONS=380} [2023-11-29 04:48:59,498 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 130 predicate places. [2023-11-29 04:48:59,498 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 380 transitions, 3095 flow [2023-11-29 04:48:59,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.333333333333336) internal successors, (284), 6 states have internal predecessors, (284), 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) [2023-11-29 04:48:59,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:48:59,499 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:59,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 04:48:59,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:59,699 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:48:59,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:59,700 INFO L85 PathProgramCache]: Analyzing trace with hash -982891071, now seen corresponding path program 2 times [2023-11-29 04:48:59,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:59,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112951971] [2023-11-29 04:48:59,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:59,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:59,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:48:59,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064105995] [2023-11-29 04:48:59,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:48:59,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:59,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:59,719 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:59,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 04:48:59,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:48:59,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:48:59,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:48:59,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:01,569 WARN L876 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2023-11-29 04:49:03,378 WARN L876 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_thread1Thread1of1ForFork1_#t~post1| 1) .cse0)))) is different from true [2023-11-29 04:49:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 8 not checked. [2023-11-29 04:49:03,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:49:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112951971] [2023-11-29 04:49:03,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:49:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064105995] [2023-11-29 04:49:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064105995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:03,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:49:03,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 04:49:03,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378308049] [2023-11-29 04:49:03,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:03,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:49:03,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:49:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=10, Total=30 [2023-11-29 04:49:03,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2023-11-29 04:49:03,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 380 transitions, 3095 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 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) [2023-11-29 04:49:03,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:03,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2023-11-29 04:49:03,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:10,411 INFO L124 PetriNetUnfolderBase]: 4699/10055 cut-off events. [2023-11-29 04:49:10,411 INFO L125 PetriNetUnfolderBase]: For 38022/38022 co-relation queries the response was YES. [2023-11-29 04:49:10,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37959 conditions, 10055 events. 4699/10055 cut-off events. For 38022/38022 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 71582 event pairs, 1378 based on Foata normal form. 126/9990 useless extension candidates. Maximal degree in co-relation 36908. Up to 5246 conditions per place. [2023-11-29 04:49:10,462 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 336 selfloop transitions, 15 changer transitions 49/431 dead transitions. [2023-11-29 04:49:10,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 431 transitions, 4325 flow [2023-11-29 04:49:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:49:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:49:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 312 transitions. [2023-11-29 04:49:10,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2023-11-29 04:49:10,464 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 312 transitions. [2023-11-29 04:49:10,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 312 transitions. [2023-11-29 04:49:10,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:10,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 312 transitions. [2023-11-29 04:49:10,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.0) internal successors, (312), 6 states have internal predecessors, (312), 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) [2023-11-29 04:49:10,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:49:10,466 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:49:10,466 INFO L175 Difference]: Start difference. First operand has 208 places, 380 transitions, 3095 flow. Second operand 6 states and 312 transitions. [2023-11-29 04:49:10,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 431 transitions, 4325 flow [2023-11-29 04:49:10,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 431 transitions, 4227 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-29 04:49:10,576 INFO L231 Difference]: Finished difference. Result has 205 places, 359 transitions, 2792 flow [2023-11-29 04:49:10,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=3020, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2792, PETRI_PLACES=205, PETRI_TRANSITIONS=359} [2023-11-29 04:49:10,577 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 127 predicate places. [2023-11-29 04:49:10,577 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 359 transitions, 2792 flow [2023-11-29 04:49:10,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 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) [2023-11-29 04:49:10,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:10,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:10,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 04:49:10,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:10,777 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:49:10,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:10,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1504603536, now seen corresponding path program 1 times [2023-11-29 04:49:10,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:10,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869318919] [2023-11-29 04:49:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:10,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:49:10,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859907764] [2023-11-29 04:49:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:10,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:10,791 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:10,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 04:49:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:10,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:49:10,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:11,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869318919] [2023-11-29 04:49:11,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:49:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859907764] [2023-11-29 04:49:11,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859907764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:11,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:49:11,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 04:49:11,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891632660] [2023-11-29 04:49:11,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:11,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:49:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:49:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:49:11,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 82 [2023-11-29 04:49:11,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 359 transitions, 2792 flow. Second operand has 15 states, 15 states have (on average 39.0) internal successors, (585), 15 states have internal predecessors, (585), 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) [2023-11-29 04:49:11,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:11,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 82 [2023-11-29 04:49:11,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:13,939 INFO L124 PetriNetUnfolderBase]: 4407/10899 cut-off events. [2023-11-29 04:49:13,940 INFO L125 PetriNetUnfolderBase]: For 29446/29446 co-relation queries the response was YES. [2023-11-29 04:49:14,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39565 conditions, 10899 events. 4407/10899 cut-off events. For 29446/29446 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 85253 event pairs, 2079 based on Foata normal form. 102/10931 useless extension candidates. Maximal degree in co-relation 39196. Up to 3711 conditions per place. [2023-11-29 04:49:14,044 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 428 selfloop transitions, 176 changer transitions 0/633 dead transitions. [2023-11-29 04:49:14,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 633 transitions, 5975 flow [2023-11-29 04:49:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:49:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:49:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 582 transitions. [2023-11-29 04:49:14,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459662288930581 [2023-11-29 04:49:14,046 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 582 transitions. [2023-11-29 04:49:14,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 582 transitions. [2023-11-29 04:49:14,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:14,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 582 transitions. [2023-11-29 04:49:14,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 44.76923076923077) internal successors, (582), 13 states have internal predecessors, (582), 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) [2023-11-29 04:49:14,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2023-11-29 04:49:14,049 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2023-11-29 04:49:14,049 INFO L175 Difference]: Start difference. First operand has 205 places, 359 transitions, 2792 flow. Second operand 13 states and 582 transitions. [2023-11-29 04:49:14,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 633 transitions, 5975 flow [2023-11-29 04:49:14,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 633 transitions, 5786 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-11-29 04:49:14,201 INFO L231 Difference]: Finished difference. Result has 208 places, 423 transitions, 3989 flow [2023-11-29 04:49:14,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3989, PETRI_PLACES=208, PETRI_TRANSITIONS=423} [2023-11-29 04:49:14,202 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 130 predicate places. [2023-11-29 04:49:14,202 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 423 transitions, 3989 flow [2023-11-29 04:49:14,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 39.0) internal successors, (585), 15 states have internal predecessors, (585), 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) [2023-11-29 04:49:14,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:14,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:14,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 04:49:14,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:14,403 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:49:14,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1965792428, now seen corresponding path program 1 times [2023-11-29 04:49:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:14,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496482308] [2023-11-29 04:49:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:14,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:14,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:49:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206531245] [2023-11-29 04:49:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:14,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:14,417 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:14,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 04:49:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:14,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:49:14,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:14,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:14,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:14,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496482308] [2023-11-29 04:49:14,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:49:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206531245] [2023-11-29 04:49:14,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206531245] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:14,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:49:14,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:49:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340673969] [2023-11-29 04:49:14,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:14,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:49:14,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:49:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:49:14,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 04:49:14,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 423 transitions, 3989 flow. Second operand has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 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) [2023-11-29 04:49:14,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:14,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 04:49:14,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:16,829 INFO L124 PetriNetUnfolderBase]: 4186/11196 cut-off events. [2023-11-29 04:49:16,829 INFO L125 PetriNetUnfolderBase]: For 32116/32116 co-relation queries the response was YES. [2023-11-29 04:49:16,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40205 conditions, 11196 events. 4186/11196 cut-off events. For 32116/32116 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 91471 event pairs, 1488 based on Foata normal form. 204/11375 useless extension candidates. Maximal degree in co-relation 39748. Up to 5266 conditions per place. [2023-11-29 04:49:16,940 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 403 selfloop transitions, 37 changer transitions 36/508 dead transitions. [2023-11-29 04:49:16,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 508 transitions, 5520 flow [2023-11-29 04:49:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:49:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:49:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 286 transitions. [2023-11-29 04:49:16,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2023-11-29 04:49:16,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 286 transitions. [2023-11-29 04:49:16,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 286 transitions. [2023-11-29 04:49:16,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:16,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 286 transitions. [2023-11-29 04:49:16,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.2) internal successors, (286), 5 states have internal predecessors, (286), 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) [2023-11-29 04:49:16,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:49:16,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:49:16,943 INFO L175 Difference]: Start difference. First operand has 208 places, 423 transitions, 3989 flow. Second operand 5 states and 286 transitions. [2023-11-29 04:49:16,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 508 transitions, 5520 flow [2023-11-29 04:49:17,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 508 transitions, 5380 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-29 04:49:17,100 INFO L231 Difference]: Finished difference. Result has 213 places, 440 transitions, 4275 flow [2023-11-29 04:49:17,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4275, PETRI_PLACES=213, PETRI_TRANSITIONS=440} [2023-11-29 04:49:17,100 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 135 predicate places. [2023-11-29 04:49:17,100 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 440 transitions, 4275 flow [2023-11-29 04:49:17,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.4) internal successors, (252), 5 states have internal predecessors, (252), 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) [2023-11-29 04:49:17,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:17,101 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:17,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 04:49:17,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 04:49:17,301 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:49:17,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:17,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1616031083, now seen corresponding path program 2 times [2023-11-29 04:49:17,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:17,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345268564] [2023-11-29 04:49:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:17,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:17,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:49:17,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490008310] [2023-11-29 04:49:17,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:49:17,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:17,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:17,317 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:17,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 04:49:17,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:49:17,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:49:17,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:49:17,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:49:17,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:49:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345268564] [2023-11-29 04:49:17,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:49:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490008310] [2023-11-29 04:49:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490008310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:49:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239069663] [2023-11-29 04:49:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:17,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:49:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:49:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:49:17,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:49:17,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 440 transitions, 4275 flow. Second operand has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:49:17,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:17,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:49:17,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:20,193 INFO L124 PetriNetUnfolderBase]: 5608/12666 cut-off events. [2023-11-29 04:49:20,194 INFO L125 PetriNetUnfolderBase]: For 38025/38025 co-relation queries the response was YES. [2023-11-29 04:49:20,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47215 conditions, 12666 events. 5608/12666 cut-off events. For 38025/38025 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 94586 event pairs, 1218 based on Foata normal form. 136/12769 useless extension candidates. Maximal degree in co-relation 46769. Up to 5378 conditions per place. [2023-11-29 04:49:20,285 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 505 selfloop transitions, 20 changer transitions 0/550 dead transitions. [2023-11-29 04:49:20,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 550 transitions, 5893 flow [2023-11-29 04:49:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:49:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:49:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 359 transitions. [2023-11-29 04:49:20,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6254355400696864 [2023-11-29 04:49:20,286 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 359 transitions. [2023-11-29 04:49:20,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 359 transitions. [2023-11-29 04:49:20,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:20,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 359 transitions. [2023-11-29 04:49:20,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.285714285714285) internal successors, (359), 7 states have internal predecessors, (359), 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) [2023-11-29 04:49:20,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2023-11-29 04:49:20,288 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2023-11-29 04:49:20,288 INFO L175 Difference]: Start difference. First operand has 213 places, 440 transitions, 4275 flow. Second operand 7 states and 359 transitions. [2023-11-29 04:49:20,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 550 transitions, 5893 flow [2023-11-29 04:49:20,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 550 transitions, 5882 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 04:49:20,451 INFO L231 Difference]: Finished difference. Result has 219 places, 443 transitions, 4356 flow [2023-11-29 04:49:20,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4261, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4356, PETRI_PLACES=219, PETRI_TRANSITIONS=443} [2023-11-29 04:49:20,451 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 141 predicate places. [2023-11-29 04:49:20,451 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 443 transitions, 4356 flow [2023-11-29 04:49:20,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.0) internal successors, (258), 6 states have internal predecessors, (258), 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) [2023-11-29 04:49:20,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:20,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:20,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 04:49:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 04:49:20,652 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:49:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1442644849, now seen corresponding path program 1 times [2023-11-29 04:49:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849112038] [2023-11-29 04:49:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:20,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:49:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956157865] [2023-11-29 04:49:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:20,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:20,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:20,668 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:20,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 04:49:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:20,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:49:20,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:49:20,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:49:33,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849112038] [2023-11-29 04:49:33,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:49:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956157865] [2023-11-29 04:49:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956157865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:33,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:49:33,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:49:33,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071576550] [2023-11-29 04:49:33,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:33,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:49:33,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:49:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=44, Unknown=3, NotChecked=0, Total=72 [2023-11-29 04:49:37,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:49:41,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:49:45,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:49:49,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:49:53,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-29 04:49:53,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 82 [2023-11-29 04:49:53,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 443 transitions, 4356 flow. Second operand has 9 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:53,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:53,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 82 [2023-11-29 04:49:53,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:04,556 INFO L124 PetriNetUnfolderBase]: 7698/15002 cut-off events. [2023-11-29 04:50:04,556 INFO L125 PetriNetUnfolderBase]: For 43205/43205 co-relation queries the response was YES. [2023-11-29 04:50:04,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56958 conditions, 15002 events. 7698/15002 cut-off events. For 43205/43205 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 102379 event pairs, 2163 based on Foata normal form. 204/15181 useless extension candidates. Maximal degree in co-relation 56509. Up to 7213 conditions per place. [2023-11-29 04:50:04,669 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 555 selfloop transitions, 18 changer transitions 0/593 dead transitions. [2023-11-29 04:50:04,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 593 transitions, 6278 flow [2023-11-29 04:50:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:50:04,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:50:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 395 transitions. [2023-11-29 04:50:04,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021341463414634 [2023-11-29 04:50:04,670 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 395 transitions. [2023-11-29 04:50:04,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 395 transitions. [2023-11-29 04:50:04,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:04,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 395 transitions. [2023-11-29 04:50:04,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 49.375) internal successors, (395), 8 states have internal predecessors, (395), 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) [2023-11-29 04:50:04,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2023-11-29 04:50:04,672 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2023-11-29 04:50:04,672 INFO L175 Difference]: Start difference. First operand has 219 places, 443 transitions, 4356 flow. Second operand 8 states and 395 transitions. [2023-11-29 04:50:04,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 593 transitions, 6278 flow [2023-11-29 04:50:04,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 593 transitions, 6213 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-29 04:50:04,870 INFO L231 Difference]: Finished difference. Result has 226 places, 449 transitions, 4438 flow [2023-11-29 04:50:04,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4438, PETRI_PLACES=226, PETRI_TRANSITIONS=449} [2023-11-29 04:50:04,871 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 148 predicate places. [2023-11-29 04:50:04,871 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 449 transitions, 4438 flow [2023-11-29 04:50:04,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:04,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:04,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:04,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 04:50:05,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:05,072 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:05,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -193334049, now seen corresponding path program 1 times [2023-11-29 04:50:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:05,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782530871] [2023-11-29 04:50:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:05,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:05,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779622236] [2023-11-29 04:50:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:05,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:05,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:05,088 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:05,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 04:50:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:05,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:50:05,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:50:05,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:50:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782530871] [2023-11-29 04:50:05,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779622236] [2023-11-29 04:50:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779622236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:05,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:50:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003528004] [2023-11-29 04:50:05,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:05,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:50:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:50:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:50:05,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:50:05,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 449 transitions, 4438 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-29 04:50:05,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:05,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:50:05,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:07,853 INFO L124 PetriNetUnfolderBase]: 4728/11898 cut-off events. [2023-11-29 04:50:07,854 INFO L125 PetriNetUnfolderBase]: For 44480/44480 co-relation queries the response was YES. [2023-11-29 04:50:07,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46079 conditions, 11898 events. 4728/11898 cut-off events. For 44480/44480 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 94659 event pairs, 2928 based on Foata normal form. 8/11857 useless extension candidates. Maximal degree in co-relation 45627. Up to 8819 conditions per place. [2023-11-29 04:50:07,931 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 416 selfloop transitions, 2 changer transitions 0/448 dead transitions. [2023-11-29 04:50:07,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 448 transitions, 5272 flow [2023-11-29 04:50:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:50:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:50:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2023-11-29 04:50:07,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2023-11-29 04:50:07,932 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 210 transitions. [2023-11-29 04:50:07,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 210 transitions. [2023-11-29 04:50:07,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:07,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 210 transitions. [2023-11-29 04:50:07,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2023-11-29 04:50:07,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:50:07,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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) [2023-11-29 04:50:07,933 INFO L175 Difference]: Start difference. First operand has 226 places, 449 transitions, 4438 flow. Second operand 4 states and 210 transitions. [2023-11-29 04:50:07,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 448 transitions, 5272 flow [2023-11-29 04:50:08,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 448 transitions, 5248 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 04:50:08,105 INFO L231 Difference]: Finished difference. Result has 225 places, 448 transitions, 4416 flow [2023-11-29 04:50:08,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4416, PETRI_PLACES=225, PETRI_TRANSITIONS=448} [2023-11-29 04:50:08,106 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 147 predicate places. [2023-11-29 04:50:08,106 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 448 transitions, 4416 flow [2023-11-29 04:50:08,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2023-11-29 04:50:08,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:08,106 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:08,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 04:50:08,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 04:50:08,307 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:08,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1480587687, now seen corresponding path program 1 times [2023-11-29 04:50:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:08,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096263610] [2023-11-29 04:50:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:08,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:08,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946547685] [2023-11-29 04:50:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:08,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:08,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:08,324 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:08,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 04:50:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:08,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:50:08,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:50:08,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:50:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096263610] [2023-11-29 04:50:09,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946547685] [2023-11-29 04:50:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946547685] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:50:09,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2023-11-29 04:50:09,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334881365] [2023-11-29 04:50:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:09,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:50:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:50:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:50:09,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2023-11-29 04:50:09,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 448 transitions, 4416 flow. Second operand has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2023-11-29 04:50:09,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:09,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2023-11-29 04:50:09,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:12,134 INFO L124 PetriNetUnfolderBase]: 4954/12567 cut-off events. [2023-11-29 04:50:12,134 INFO L125 PetriNetUnfolderBase]: For 43296/43296 co-relation queries the response was YES. [2023-11-29 04:50:12,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47871 conditions, 12567 events. 4954/12567 cut-off events. For 43296/43296 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 101611 event pairs, 3129 based on Foata normal form. 2/12524 useless extension candidates. Maximal degree in co-relation 47712. Up to 6780 conditions per place. [2023-11-29 04:50:12,214 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 458 selfloop transitions, 156 changer transitions 27/672 dead transitions. [2023-11-29 04:50:12,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 672 transitions, 7419 flow [2023-11-29 04:50:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:50:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:50:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 446 transitions. [2023-11-29 04:50:12,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043360433604336 [2023-11-29 04:50:12,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 446 transitions. [2023-11-29 04:50:12,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 446 transitions. [2023-11-29 04:50:12,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:12,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 446 transitions. [2023-11-29 04:50:12,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 49.55555555555556) internal successors, (446), 9 states have internal predecessors, (446), 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) [2023-11-29 04:50:12,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2023-11-29 04:50:12,219 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2023-11-29 04:50:12,219 INFO L175 Difference]: Start difference. First operand has 225 places, 448 transitions, 4416 flow. Second operand 9 states and 446 transitions. [2023-11-29 04:50:12,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 672 transitions, 7419 flow [2023-11-29 04:50:12,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 672 transitions, 7415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:50:12,415 INFO L231 Difference]: Finished difference. Result has 238 places, 504 transitions, 5644 flow [2023-11-29 04:50:12,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4413, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5644, PETRI_PLACES=238, PETRI_TRANSITIONS=504} [2023-11-29 04:50:12,416 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 160 predicate places. [2023-11-29 04:50:12,416 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 504 transitions, 5644 flow [2023-11-29 04:50:12,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 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) [2023-11-29 04:50:12,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:12,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:12,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 04:50:12,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 04:50:12,617 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:12,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1626647527, now seen corresponding path program 1 times [2023-11-29 04:50:12,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:12,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484517346] [2023-11-29 04:50:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:12,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:12,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:12,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875838195] [2023-11-29 04:50:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:12,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:12,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:12,633 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:12,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 04:50:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:12,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:50:12,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:50:13,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:50:13,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484517346] [2023-11-29 04:50:13,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875838195] [2023-11-29 04:50:13,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875838195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:13,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:13,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:50:13,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738814934] [2023-11-29 04:50:13,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:13,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:50:13,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:13,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:50:13,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:50:14,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2023-11-29 04:50:14,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 504 transitions, 5644 flow. Second operand has 7 states, 7 states have (on average 45.285714285714285) internal successors, (317), 7 states have internal predecessors, (317), 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) [2023-11-29 04:50:14,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:14,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2023-11-29 04:50:14,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:18,041 INFO L124 PetriNetUnfolderBase]: 4908/12647 cut-off events. [2023-11-29 04:50:18,041 INFO L125 PetriNetUnfolderBase]: For 50747/50747 co-relation queries the response was YES. [2023-11-29 04:50:18,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51131 conditions, 12647 events. 4908/12647 cut-off events. For 50747/50747 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 103378 event pairs, 2973 based on Foata normal form. 1/12607 useless extension candidates. Maximal degree in co-relation 50580. Up to 8820 conditions per place. [2023-11-29 04:50:18,125 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 564 selfloop transitions, 30 changer transitions 20/645 dead transitions. [2023-11-29 04:50:18,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 645 transitions, 7977 flow [2023-11-29 04:50:18,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:50:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:50:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 390 transitions. [2023-11-29 04:50:18,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945121951219512 [2023-11-29 04:50:18,127 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 390 transitions. [2023-11-29 04:50:18,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 390 transitions. [2023-11-29 04:50:18,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:18,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 390 transitions. [2023-11-29 04:50:18,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 48.75) internal successors, (390), 8 states have internal predecessors, (390), 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) [2023-11-29 04:50:18,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2023-11-29 04:50:18,129 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2023-11-29 04:50:18,129 INFO L175 Difference]: Start difference. First operand has 238 places, 504 transitions, 5644 flow. Second operand 8 states and 390 transitions. [2023-11-29 04:50:18,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 645 transitions, 7977 flow [2023-11-29 04:50:18,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 645 transitions, 7858 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-11-29 04:50:18,377 INFO L231 Difference]: Finished difference. Result has 239 places, 493 transitions, 5694 flow [2023-11-29 04:50:18,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=5136, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5694, PETRI_PLACES=239, PETRI_TRANSITIONS=493} [2023-11-29 04:50:18,378 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 161 predicate places. [2023-11-29 04:50:18,378 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 493 transitions, 5694 flow [2023-11-29 04:50:18,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.285714285714285) internal successors, (317), 7 states have internal predecessors, (317), 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) [2023-11-29 04:50:18,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:18,378 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:18,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-29 04:50:18,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 04:50:18,579 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:18,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:18,579 INFO L85 PathProgramCache]: Analyzing trace with hash -683160522, now seen corresponding path program 1 times [2023-11-29 04:50:18,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:18,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969630362] [2023-11-29 04:50:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:18,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:18,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812637302] [2023-11-29 04:50:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:18,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:18,597 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:18,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 04:50:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:18,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:50:18,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:50:18,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:50:18,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969630362] [2023-11-29 04:50:18,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:18,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812637302] [2023-11-29 04:50:18,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812637302] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:18,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:50:18,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:50:18,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410711068] [2023-11-29 04:50:18,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:18,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:50:18,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:18,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:50:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:50:18,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 04:50:18,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 493 transitions, 5694 flow. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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) [2023-11-29 04:50:18,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:18,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 04:50:18,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:20,845 INFO L124 PetriNetUnfolderBase]: 3887/9326 cut-off events. [2023-11-29 04:50:20,846 INFO L125 PetriNetUnfolderBase]: For 33767/33767 co-relation queries the response was YES. [2023-11-29 04:50:20,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36166 conditions, 9326 events. 3887/9326 cut-off events. For 33767/33767 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 69049 event pairs, 2400 based on Foata normal form. 2/9288 useless extension candidates. Maximal degree in co-relation 35613. Up to 6030 conditions per place. [2023-11-29 04:50:20,938 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 397 selfloop transitions, 145 changer transitions 20/593 dead transitions. [2023-11-29 04:50:20,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 593 transitions, 6937 flow [2023-11-29 04:50:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:50:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:50:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2023-11-29 04:50:20,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2023-11-29 04:50:20,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 326 transitions. [2023-11-29 04:50:20,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 326 transitions. [2023-11-29 04:50:20,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:20,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 326 transitions. [2023-11-29 04:50:20,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 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) [2023-11-29 04:50:20,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:50:20,941 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:50:20,941 INFO L175 Difference]: Start difference. First operand has 239 places, 493 transitions, 5694 flow. Second operand 6 states and 326 transitions. [2023-11-29 04:50:20,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 593 transitions, 6937 flow [2023-11-29 04:50:21,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 593 transitions, 6808 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-11-29 04:50:21,099 INFO L231 Difference]: Finished difference. Result has 237 places, 463 transitions, 5108 flow [2023-11-29 04:50:21,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4615, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5108, PETRI_PLACES=237, PETRI_TRANSITIONS=463} [2023-11-29 04:50:21,099 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 159 predicate places. [2023-11-29 04:50:21,099 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 463 transitions, 5108 flow [2023-11-29 04:50:21,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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) [2023-11-29 04:50:21,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:21,100 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:21,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-29 04:50:21,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:21,300 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:21,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1402247277, now seen corresponding path program 2 times [2023-11-29 04:50:21,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155496630] [2023-11-29 04:50:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:21,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933939003] [2023-11-29 04:50:21,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:50:21,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:21,321 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:21,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 04:50:21,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:50:21,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:50:21,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:50:21,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:23,341 WARN L876 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2023-11-29 04:50:25,280 WARN L876 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| .cse0) (<= .cse0 2147483647)))) is different from true [2023-11-29 04:50:27,168 WARN L876 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) .cse0)))) is different from true [2023-11-29 04:50:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 20 not checked. [2023-11-29 04:50:27,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:27,213 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 04:50:27,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:27,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155496630] [2023-11-29 04:50:27,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:27,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933939003] [2023-11-29 04:50:27,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933939003] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:27,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:27,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 04:50:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129535717] [2023-11-29 04:50:27,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:50:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:50:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=3, NotChecked=24, Total=56 [2023-11-29 04:50:27,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2023-11-29 04:50:27,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 463 transitions, 5108 flow. Second operand has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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) [2023-11-29 04:50:27,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:27,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2023-11-29 04:50:27,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:34,800 INFO L124 PetriNetUnfolderBase]: 3845/9270 cut-off events. [2023-11-29 04:50:34,801 INFO L125 PetriNetUnfolderBase]: For 33203/33203 co-relation queries the response was YES. [2023-11-29 04:50:34,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37268 conditions, 9270 events. 3845/9270 cut-off events. For 33203/33203 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 68844 event pairs, 2358 based on Foata normal form. 2/9239 useless extension candidates. Maximal degree in co-relation 36653. Up to 7261 conditions per place. [2023-11-29 04:50:34,885 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 364 selfloop transitions, 71 changer transitions 2/462 dead transitions. [2023-11-29 04:50:34,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 462 transitions, 5958 flow [2023-11-29 04:50:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:50:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:50:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2023-11-29 04:50:34,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104529616724739 [2023-11-29 04:50:34,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 293 transitions. [2023-11-29 04:50:34,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 293 transitions. [2023-11-29 04:50:34,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:34,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 293 transitions. [2023-11-29 04:50:34,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.857142857142854) internal successors, (293), 7 states have internal predecessors, (293), 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) [2023-11-29 04:50:34,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2023-11-29 04:50:34,888 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2023-11-29 04:50:34,888 INFO L175 Difference]: Start difference. First operand has 237 places, 463 transitions, 5108 flow. Second operand 7 states and 293 transitions. [2023-11-29 04:50:34,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 462 transitions, 5958 flow [2023-11-29 04:50:35,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 462 transitions, 5887 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-29 04:50:35,024 INFO L231 Difference]: Finished difference. Result has 237 places, 460 transitions, 5150 flow [2023-11-29 04:50:35,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5150, PETRI_PLACES=237, PETRI_TRANSITIONS=460} [2023-11-29 04:50:35,025 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 159 predicate places. [2023-11-29 04:50:35,025 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 460 transitions, 5150 flow [2023-11-29 04:50:35,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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) [2023-11-29 04:50:35,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:35,025 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:35,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 04:50:35,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:35,226 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:35,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash 460206252, now seen corresponding path program 1 times [2023-11-29 04:50:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:35,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265699116] [2023-11-29 04:50:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:35,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:35,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:35,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110449019] [2023-11-29 04:50:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:35,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:35,243 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:35,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 04:50:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:35,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:50:35,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-29 04:50:35,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-29 04:50:35,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265699116] [2023-11-29 04:50:35,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110449019] [2023-11-29 04:50:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110449019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:35,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:35,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:50:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724867497] [2023-11-29 04:50:35,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:50:35,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:50:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:50:35,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 04:50:35,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 460 transitions, 5150 flow. Second operand has 7 states, 7 states have (on average 47.42857142857143) internal successors, (332), 7 states have internal predecessors, (332), 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) [2023-11-29 04:50:35,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:35,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 04:50:35,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:37,421 INFO L124 PetriNetUnfolderBase]: 3588/8201 cut-off events. [2023-11-29 04:50:37,421 INFO L125 PetriNetUnfolderBase]: For 29544/29544 co-relation queries the response was YES. [2023-11-29 04:50:37,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31148 conditions, 8201 events. 3588/8201 cut-off events. For 29544/29544 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 57255 event pairs, 2357 based on Foata normal form. 29/8197 useless extension candidates. Maximal degree in co-relation 31073. Up to 5168 conditions per place. [2023-11-29 04:50:37,470 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 241 selfloop transitions, 146 changer transitions 34/450 dead transitions. [2023-11-29 04:50:37,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 450 transitions, 5499 flow [2023-11-29 04:50:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:50:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:50:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 325 transitions. [2023-11-29 04:50:37,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6605691056910569 [2023-11-29 04:50:37,471 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 325 transitions. [2023-11-29 04:50:37,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 325 transitions. [2023-11-29 04:50:37,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:37,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 325 transitions. [2023-11-29 04:50:37,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 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) [2023-11-29 04:50:37,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:50:37,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2023-11-29 04:50:37,473 INFO L175 Difference]: Start difference. First operand has 237 places, 460 transitions, 5150 flow. Second operand 6 states and 325 transitions. [2023-11-29 04:50:37,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 450 transitions, 5499 flow [2023-11-29 04:50:37,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 450 transitions, 5025 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-11-29 04:50:37,570 INFO L231 Difference]: Finished difference. Result has 228 places, 405 transitions, 4297 flow [2023-11-29 04:50:37,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4297, PETRI_PLACES=228, PETRI_TRANSITIONS=405} [2023-11-29 04:50:37,570 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 150 predicate places. [2023-11-29 04:50:37,571 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 405 transitions, 4297 flow [2023-11-29 04:50:37,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.42857142857143) internal successors, (332), 7 states have internal predecessors, (332), 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) [2023-11-29 04:50:37,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:37,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:37,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 04:50:37,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 04:50:37,772 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:37,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash -5909348, now seen corresponding path program 1 times [2023-11-29 04:50:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:37,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478099645] [2023-11-29 04:50:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:37,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366037924] [2023-11-29 04:50:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:37,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:37,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:37,793 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:37,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 04:50:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:38,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:50:38,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:50:38,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:50:38,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:38,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478099645] [2023-11-29 04:50:38,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:38,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366037924] [2023-11-29 04:50:38,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366037924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:38,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:38,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 04:50:38,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99720500] [2023-11-29 04:50:38,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:38,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:50:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:50:38,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:50:42,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 82 [2023-11-29 04:50:42,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 405 transitions, 4297 flow. Second operand has 13 states, 13 states have (on average 44.92307692307692) internal successors, (584), 13 states have internal predecessors, (584), 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) [2023-11-29 04:50:42,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:42,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 82 [2023-11-29 04:50:42,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:44,724 INFO L124 PetriNetUnfolderBase]: 4232/8795 cut-off events. [2023-11-29 04:50:44,724 INFO L125 PetriNetUnfolderBase]: For 27285/27285 co-relation queries the response was YES. [2023-11-29 04:50:44,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32952 conditions, 8795 events. 4232/8795 cut-off events. For 27285/27285 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 58009 event pairs, 375 based on Foata normal form. 78/8865 useless extension candidates. Maximal degree in co-relation 32880. Up to 2860 conditions per place. [2023-11-29 04:50:44,809 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 395 selfloop transitions, 79 changer transitions 53/550 dead transitions. [2023-11-29 04:50:44,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 550 transitions, 6005 flow [2023-11-29 04:50:44,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:50:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:50:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 540 transitions. [2023-11-29 04:50:44,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5986696230598669 [2023-11-29 04:50:44,811 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 540 transitions. [2023-11-29 04:50:44,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 540 transitions. [2023-11-29 04:50:44,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:44,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 540 transitions. [2023-11-29 04:50:44,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 49.09090909090909) internal successors, (540), 11 states have internal predecessors, (540), 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) [2023-11-29 04:50:44,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2023-11-29 04:50:44,812 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2023-11-29 04:50:44,813 INFO L175 Difference]: Start difference. First operand has 228 places, 405 transitions, 4297 flow. Second operand 11 states and 540 transitions. [2023-11-29 04:50:44,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 550 transitions, 6005 flow [2023-11-29 04:50:44,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 550 transitions, 5787 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:50:44,945 INFO L231 Difference]: Finished difference. Result has 232 places, 403 transitions, 4225 flow [2023-11-29 04:50:44,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4225, PETRI_PLACES=232, PETRI_TRANSITIONS=403} [2023-11-29 04:50:44,945 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 154 predicate places. [2023-11-29 04:50:44,945 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 403 transitions, 4225 flow [2023-11-29 04:50:44,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.92307692307692) internal successors, (584), 13 states have internal predecessors, (584), 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) [2023-11-29 04:50:44,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:44,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:44,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-11-29 04:50:45,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 04:50:45,146 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:45,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:45,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1841546152, now seen corresponding path program 1 times [2023-11-29 04:50:45,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:45,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441438624] [2023-11-29 04:50:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:45,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:45,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:45,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191777117] [2023-11-29 04:50:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:45,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:45,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:45,164 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:45,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 04:50:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:45,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:50:45,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:50:45,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:50:45,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:45,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441438624] [2023-11-29 04:50:45,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:45,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191777117] [2023-11-29 04:50:45,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191777117] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:45,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:50:45,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-29 04:50:45,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382505337] [2023-11-29 04:50:45,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:50:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:45,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:50:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:50:45,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 82 [2023-11-29 04:50:45,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 403 transitions, 4225 flow. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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) [2023-11-29 04:50:45,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:45,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 82 [2023-11-29 04:50:45,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:47,043 INFO L124 PetriNetUnfolderBase]: 3340/7674 cut-off events. [2023-11-29 04:50:47,043 INFO L125 PetriNetUnfolderBase]: For 28858/28858 co-relation queries the response was YES. [2023-11-29 04:50:47,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29111 conditions, 7674 events. 3340/7674 cut-off events. For 28858/28858 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 53019 event pairs, 1095 based on Foata normal form. 142/7771 useless extension candidates. Maximal degree in co-relation 29039. Up to 3687 conditions per place. [2023-11-29 04:50:47,099 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 409 selfloop transitions, 13 changer transitions 14/463 dead transitions. [2023-11-29 04:50:47,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 463 transitions, 5618 flow [2023-11-29 04:50:47,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:50:47,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:50:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2023-11-29 04:50:47,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2023-11-29 04:50:47,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 285 transitions. [2023-11-29 04:50:47,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 285 transitions. [2023-11-29 04:50:47,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:47,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 285 transitions. [2023-11-29 04:50:47,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2023-11-29 04:50:47,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:50:47,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:50:47,102 INFO L175 Difference]: Start difference. First operand has 232 places, 403 transitions, 4225 flow. Second operand 5 states and 285 transitions. [2023-11-29 04:50:47,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 463 transitions, 5618 flow [2023-11-29 04:50:47,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 463 transitions, 5426 flow, removed 20 selfloop flow, removed 9 redundant places. [2023-11-29 04:50:47,188 INFO L231 Difference]: Finished difference. Result has 226 places, 402 transitions, 4088 flow [2023-11-29 04:50:47,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4062, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4088, PETRI_PLACES=226, PETRI_TRANSITIONS=402} [2023-11-29 04:50:47,188 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 148 predicate places. [2023-11-29 04:50:47,188 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 402 transitions, 4088 flow [2023-11-29 04:50:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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) [2023-11-29 04:50:47,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:47,189 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:47,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 04:50:47,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 04:50:47,389 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:47,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash -183188924, now seen corresponding path program 1 times [2023-11-29 04:50:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:47,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311303668] [2023-11-29 04:50:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:47,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:47,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:47,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745523915] [2023-11-29 04:50:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:47,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:47,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:47,411 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:47,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 04:50:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:47,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:50:47,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:50:47,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:50:48,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311303668] [2023-11-29 04:50:48,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:48,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745523915] [2023-11-29 04:50:48,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745523915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:48,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:48,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 04:50:48,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524656422] [2023-11-29 04:50:48,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:48,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:50:48,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:50:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:50:53,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2023-11-29 04:50:53,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 402 transitions, 4088 flow. Second operand has 13 states, 13 states have (on average 40.15384615384615) internal successors, (522), 13 states have internal predecessors, (522), 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) [2023-11-29 04:50:53,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:53,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2023-11-29 04:50:53,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:57,788 INFO L124 PetriNetUnfolderBase]: 4864/10194 cut-off events. [2023-11-29 04:50:57,788 INFO L125 PetriNetUnfolderBase]: For 33798/33798 co-relation queries the response was YES. [2023-11-29 04:50:57,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38986 conditions, 10194 events. 4864/10194 cut-off events. For 33798/33798 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 69092 event pairs, 663 based on Foata normal form. 104/10294 useless extension candidates. Maximal degree in co-relation 38917. Up to 2782 conditions per place. [2023-11-29 04:50:57,893 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 407 selfloop transitions, 78 changer transitions 31/539 dead transitions. [2023-11-29 04:50:57,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 539 transitions, 5900 flow [2023-11-29 04:50:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:50:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:50:57,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 464 transitions. [2023-11-29 04:50:57,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658536585365853 [2023-11-29 04:50:57,894 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 464 transitions. [2023-11-29 04:50:57,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 464 transitions. [2023-11-29 04:50:57,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:57,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 464 transitions. [2023-11-29 04:50:57,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.4) internal successors, (464), 10 states have internal predecessors, (464), 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) [2023-11-29 04:50:57,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:50:57,896 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:50:57,896 INFO L175 Difference]: Start difference. First operand has 226 places, 402 transitions, 4088 flow. Second operand 10 states and 464 transitions. [2023-11-29 04:50:57,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 539 transitions, 5900 flow [2023-11-29 04:50:58,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 539 transitions, 5835 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:50:58,023 INFO L231 Difference]: Finished difference. Result has 235 places, 405 transitions, 4301 flow [2023-11-29 04:50:58,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4301, PETRI_PLACES=235, PETRI_TRANSITIONS=405} [2023-11-29 04:50:58,024 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 157 predicate places. [2023-11-29 04:50:58,024 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 405 transitions, 4301 flow [2023-11-29 04:50:58,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 40.15384615384615) internal successors, (522), 13 states have internal predecessors, (522), 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) [2023-11-29 04:50:58,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:58,024 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:58,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 04:50:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 04:50:58,225 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:50:58,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2109070086, now seen corresponding path program 1 times [2023-11-29 04:50:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905324994] [2023-11-29 04:50:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:58,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:50:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759974989] [2023-11-29 04:50:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:58,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:58,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:58,244 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:58,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 04:50:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:58,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:50:58,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:50:58,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:50:59,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905324994] [2023-11-29 04:50:59,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:50:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759974989] [2023-11-29 04:50:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759974989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:59,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2023-11-29 04:50:59,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471505901] [2023-11-29 04:50:59,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:59,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 04:50:59,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 04:50:59,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 04:50:59,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:50:59,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 405 transitions, 4301 flow. Second operand has 46 states, 46 states have (on average 40.21739130434783) internal successors, (1850), 46 states have internal predecessors, (1850), 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) [2023-11-29 04:50:59,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:59,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:50:59,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:02,088 INFO L124 PetriNetUnfolderBase]: 4436/10531 cut-off events. [2023-11-29 04:51:02,088 INFO L125 PetriNetUnfolderBase]: For 55603/55603 co-relation queries the response was YES. [2023-11-29 04:51:02,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42533 conditions, 10531 events. 4436/10531 cut-off events. For 55603/55603 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 74598 event pairs, 2859 based on Foata normal form. 252/10746 useless extension candidates. Maximal degree in co-relation 42460. Up to 6813 conditions per place. [2023-11-29 04:51:02,197 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 106 selfloop transitions, 524 changer transitions 0/657 dead transitions. [2023-11-29 04:51:02,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 657 transitions, 8021 flow [2023-11-29 04:51:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 04:51:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-29 04:51:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2041 transitions. [2023-11-29 04:51:02,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410922587486744 [2023-11-29 04:51:02,200 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2041 transitions. [2023-11-29 04:51:02,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2041 transitions. [2023-11-29 04:51:02,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:02,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2041 transitions. [2023-11-29 04:51:02,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 44.369565217391305) internal successors, (2041), 46 states have internal predecessors, (2041), 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) [2023-11-29 04:51:02,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 82.0) internal successors, (3854), 47 states have internal predecessors, (3854), 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) [2023-11-29 04:51:02,206 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 82.0) internal successors, (3854), 47 states have internal predecessors, (3854), 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) [2023-11-29 04:51:02,206 INFO L175 Difference]: Start difference. First operand has 235 places, 405 transitions, 4301 flow. Second operand 46 states and 2041 transitions. [2023-11-29 04:51:02,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 657 transitions, 8021 flow [2023-11-29 04:51:02,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 657 transitions, 7913 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 04:51:02,350 INFO L231 Difference]: Finished difference. Result has 286 places, 657 transitions, 7861 flow [2023-11-29 04:51:02,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7861, PETRI_PLACES=286, PETRI_TRANSITIONS=657} [2023-11-29 04:51:02,351 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 208 predicate places. [2023-11-29 04:51:02,351 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 657 transitions, 7861 flow [2023-11-29 04:51:02,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 40.21739130434783) internal successors, (1850), 46 states have internal predecessors, (1850), 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) [2023-11-29 04:51:02,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:02,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:02,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-29 04:51:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 04:51:02,551 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:02,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash -263936482, now seen corresponding path program 1 times [2023-11-29 04:51:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:02,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101418146] [2023-11-29 04:51:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:02,570 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:02,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530523369] [2023-11-29 04:51:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:02,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:02,572 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:02,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 04:51:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:02,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:51:02,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:51:02,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:51:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101418146] [2023-11-29 04:51:03,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:51:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530523369] [2023-11-29 04:51:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530523369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:03,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:51:03,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-29 04:51:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689410634] [2023-11-29 04:51:03,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:51:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:51:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:51:03,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 82 [2023-11-29 04:51:03,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 657 transitions, 7861 flow. Second operand has 8 states, 8 states have (on average 41.875) internal successors, (335), 8 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) [2023-11-29 04:51:03,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:03,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 82 [2023-11-29 04:51:03,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:05,778 INFO L124 PetriNetUnfolderBase]: 4436/10543 cut-off events. [2023-11-29 04:51:05,778 INFO L125 PetriNetUnfolderBase]: For 48397/48397 co-relation queries the response was YES. [2023-11-29 04:51:05,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44403 conditions, 10543 events. 4436/10543 cut-off events. For 48397/48397 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 74759 event pairs, 2859 based on Foata normal form. 0/10516 useless extension candidates. Maximal degree in co-relation 44319. Up to 5787 conditions per place. [2023-11-29 04:51:05,879 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 752 selfloop transitions, 56 changer transitions 0/833 dead transitions. [2023-11-29 04:51:05,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 833 transitions, 12066 flow [2023-11-29 04:51:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:51:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:51:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 368 transitions. [2023-11-29 04:51:05,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-11-29 04:51:05,880 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 368 transitions. [2023-11-29 04:51:05,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 368 transitions. [2023-11-29 04:51:05,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:05,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 368 transitions. [2023-11-29 04:51:05,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 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) [2023-11-29 04:51:05,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2023-11-29 04:51:05,882 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2023-11-29 04:51:05,882 INFO L175 Difference]: Start difference. First operand has 286 places, 657 transitions, 7861 flow. Second operand 8 states and 368 transitions. [2023-11-29 04:51:05,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 833 transitions, 12066 flow [2023-11-29 04:51:06,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 833 transitions, 10530 flow, removed 422 selfloop flow, removed 21 redundant places. [2023-11-29 04:51:06,088 INFO L231 Difference]: Finished difference. Result has 274 places, 659 transitions, 6802 flow [2023-11-29 04:51:06,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6802, PETRI_PLACES=274, PETRI_TRANSITIONS=659} [2023-11-29 04:51:06,089 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 196 predicate places. [2023-11-29 04:51:06,089 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 659 transitions, 6802 flow [2023-11-29 04:51:06,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 41.875) internal successors, (335), 8 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) [2023-11-29 04:51:06,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:06,089 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:06,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-29 04:51:06,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 04:51:06,290 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:06,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:06,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1297566639, now seen corresponding path program 1 times [2023-11-29 04:51:06,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:06,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753427385] [2023-11-29 04:51:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:06,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:06,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:06,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244911041] [2023-11-29 04:51:06,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:06,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:06,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:06,309 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:06,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 04:51:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:06,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:51:06,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:51:06,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:51:06,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753427385] [2023-11-29 04:51:06,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:51:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244911041] [2023-11-29 04:51:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244911041] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:06,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:51:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-11-29 04:51:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713164785] [2023-11-29 04:51:06,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:06,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:51:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:51:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:51:07,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 82 [2023-11-29 04:51:07,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 659 transitions, 6802 flow. Second operand has 23 states, 23 states have (on average 39.0) internal successors, (897), 23 states have internal predecessors, (897), 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) [2023-11-29 04:51:07,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:07,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 82 [2023-11-29 04:51:07,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:11,909 INFO L124 PetriNetUnfolderBase]: 6908/16008 cut-off events. [2023-11-29 04:51:11,909 INFO L125 PetriNetUnfolderBase]: For 63850/63850 co-relation queries the response was YES. [2023-11-29 04:51:12,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64132 conditions, 16008 events. 6908/16008 cut-off events. For 63850/63850 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 121194 event pairs, 2889 based on Foata normal form. 104/16084 useless extension candidates. Maximal degree in co-relation 64045. Up to 4411 conditions per place. [2023-11-29 04:51:12,099 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 777 selfloop transitions, 296 changer transitions 0/1100 dead transitions. [2023-11-29 04:51:12,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1100 transitions, 12350 flow [2023-11-29 04:51:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:51:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 04:51:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 827 transitions. [2023-11-29 04:51:12,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308087291399229 [2023-11-29 04:51:12,101 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 827 transitions. [2023-11-29 04:51:12,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 827 transitions. [2023-11-29 04:51:12,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:12,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 827 transitions. [2023-11-29 04:51:12,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 43.526315789473685) internal successors, (827), 19 states have internal predecessors, (827), 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) [2023-11-29 04:51:12,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 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) [2023-11-29 04:51:12,104 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 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) [2023-11-29 04:51:12,104 INFO L175 Difference]: Start difference. First operand has 274 places, 659 transitions, 6802 flow. Second operand 19 states and 827 transitions. [2023-11-29 04:51:12,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1100 transitions, 12350 flow [2023-11-29 04:51:12,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1100 transitions, 12268 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:51:12,450 INFO L231 Difference]: Finished difference. Result has 297 places, 751 transitions, 9070 flow [2023-11-29 04:51:12,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=6724, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9070, PETRI_PLACES=297, PETRI_TRANSITIONS=751} [2023-11-29 04:51:12,451 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 219 predicate places. [2023-11-29 04:51:12,451 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 751 transitions, 9070 flow [2023-11-29 04:51:12,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 39.0) internal successors, (897), 23 states have internal predecessors, (897), 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) [2023-11-29 04:51:12,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:12,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:12,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-29 04:51:12,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 04:51:12,651 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:12,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:12,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1680016862, now seen corresponding path program 1 times [2023-11-29 04:51:12,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:12,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706427133] [2023-11-29 04:51:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:12,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:12,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591455908] [2023-11-29 04:51:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:12,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:12,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:12,672 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:12,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 04:51:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:12,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:51:12,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 04:51:12,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:51:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706427133] [2023-11-29 04:51:12,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:51:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591455908] [2023-11-29 04:51:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591455908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:12,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:12,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:51:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852122163] [2023-11-29 04:51:12,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:51:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:12,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:51:12,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:51:12,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:51:12,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 751 transitions, 9070 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-29 04:51:12,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:12,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:51:12,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:16,918 INFO L124 PetriNetUnfolderBase]: 6644/15711 cut-off events. [2023-11-29 04:51:16,918 INFO L125 PetriNetUnfolderBase]: For 84721/84721 co-relation queries the response was YES. [2023-11-29 04:51:17,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68284 conditions, 15711 events. 6644/15711 cut-off events. For 84721/84721 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 120265 event pairs, 4329 based on Foata normal form. 6/15684 useless extension candidates. Maximal degree in co-relation 68189. Up to 11662 conditions per place. [2023-11-29 04:51:17,141 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 720 selfloop transitions, 2 changer transitions 0/750 dead transitions. [2023-11-29 04:51:17,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 750 transitions, 10512 flow [2023-11-29 04:51:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:51:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:51:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2023-11-29 04:51:17,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6747967479674797 [2023-11-29 04:51:17,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 166 transitions. [2023-11-29 04:51:17,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 166 transitions. [2023-11-29 04:51:17,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:17,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 166 transitions. [2023-11-29 04:51:17,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-29 04:51:17,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-29 04:51:17,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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) [2023-11-29 04:51:17,144 INFO L175 Difference]: Start difference. First operand has 297 places, 751 transitions, 9070 flow. Second operand 3 states and 166 transitions. [2023-11-29 04:51:17,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 750 transitions, 10512 flow [2023-11-29 04:51:18,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 750 transitions, 10492 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-29 04:51:18,101 INFO L231 Difference]: Finished difference. Result has 298 places, 750 transitions, 9052 flow [2023-11-29 04:51:18,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=9048, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=9052, PETRI_PLACES=298, PETRI_TRANSITIONS=750} [2023-11-29 04:51:18,102 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 220 predicate places. [2023-11-29 04:51:18,102 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 750 transitions, 9052 flow [2023-11-29 04:51:18,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-29 04:51:18,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:18,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:18,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 04:51:18,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:18,303 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:18,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash -239863155, now seen corresponding path program 1 times [2023-11-29 04:51:18,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:18,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733241281] [2023-11-29 04:51:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:18,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:18,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217650811] [2023-11-29 04:51:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:18,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:18,322 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:18,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 04:51:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:18,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:51:18,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:51:18,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:51:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733241281] [2023-11-29 04:51:19,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:51:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217650811] [2023-11-29 04:51:19,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217650811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:19,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:51:19,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 04:51:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793581160] [2023-11-29 04:51:19,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:51:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:51:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:51:24,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 04:51:24,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 750 transitions, 9052 flow. Second operand has 14 states, 14 states have (on average 38.714285714285715) internal successors, (542), 14 states have internal predecessors, (542), 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) [2023-11-29 04:51:24,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:24,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 04:51:24,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:32,635 INFO L124 PetriNetUnfolderBase]: 6644/15664 cut-off events. [2023-11-29 04:51:32,635 INFO L125 PetriNetUnfolderBase]: For 83994/83994 co-relation queries the response was YES. [2023-11-29 04:51:32,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67810 conditions, 15664 events. 6644/15664 cut-off events. For 83994/83994 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 119513 event pairs, 4329 based on Foata normal form. 5/15630 useless extension candidates. Maximal degree in co-relation 67714. Up to 4128 conditions per place. [2023-11-29 04:51:32,786 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 973 selfloop transitions, 263 changer transitions 21/1280 dead transitions. [2023-11-29 04:51:32,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 1280 transitions, 15209 flow [2023-11-29 04:51:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:51:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 04:51:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 766 transitions. [2023-11-29 04:51:32,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49165596919127086 [2023-11-29 04:51:32,788 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 766 transitions. [2023-11-29 04:51:32,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 766 transitions. [2023-11-29 04:51:32,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:32,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 766 transitions. [2023-11-29 04:51:32,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 40.31578947368421) internal successors, (766), 19 states have internal predecessors, (766), 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) [2023-11-29 04:51:32,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 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) [2023-11-29 04:51:32,792 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 82.0) internal successors, (1640), 20 states have internal predecessors, (1640), 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) [2023-11-29 04:51:32,792 INFO L175 Difference]: Start difference. First operand has 298 places, 750 transitions, 9052 flow. Second operand 19 states and 766 transitions. [2023-11-29 04:51:32,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 1280 transitions, 15209 flow [2023-11-29 04:51:33,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1280 transitions, 15203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:51:33,290 INFO L231 Difference]: Finished difference. Result has 319 places, 749 transitions, 9565 flow [2023-11-29 04:51:33,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=9050, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9565, PETRI_PLACES=319, PETRI_TRANSITIONS=749} [2023-11-29 04:51:33,291 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 241 predicate places. [2023-11-29 04:51:33,291 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 749 transitions, 9565 flow [2023-11-29 04:51:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.714285714285715) internal successors, (542), 14 states have internal predecessors, (542), 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) [2023-11-29 04:51:33,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:33,291 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:33,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 04:51:33,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:33,492 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:33,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:33,492 INFO L85 PathProgramCache]: Analyzing trace with hash 111866762, now seen corresponding path program 2 times [2023-11-29 04:51:33,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:33,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714272673] [2023-11-29 04:51:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:33,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:33,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:33,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470822840] [2023-11-29 04:51:33,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:51:33,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:33,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:33,523 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:33,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 04:51:33,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:51:33,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:51:33,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:51:33,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-29 04:51:33,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-29 04:51:33,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:33,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714272673] [2023-11-29 04:51:33,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:51:33,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470822840] [2023-11-29 04:51:33,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470822840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:33,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:51:33,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-29 04:51:33,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825035605] [2023-11-29 04:51:33,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:33,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:51:33,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:51:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:51:33,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2023-11-29 04:51:33,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 749 transitions, 9565 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2023-11-29 04:51:33,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:33,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2023-11-29 04:51:33,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:38,467 INFO L124 PetriNetUnfolderBase]: 6354/15186 cut-off events. [2023-11-29 04:51:38,467 INFO L125 PetriNetUnfolderBase]: For 84446/84446 co-relation queries the response was YES. [2023-11-29 04:51:38,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66118 conditions, 15186 events. 6354/15186 cut-off events. For 84446/84446 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 115971 event pairs, 4113 based on Foata normal form. 6/15159 useless extension candidates. Maximal degree in co-relation 66021. Up to 8961 conditions per place. [2023-11-29 04:51:38,619 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 342 selfloop transitions, 310 changer transitions 68/748 dead transitions. [2023-11-29 04:51:38,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 748 transitions, 10983 flow [2023-11-29 04:51:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:51:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:51:38,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2023-11-29 04:51:38,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5926829268292683 [2023-11-29 04:51:38,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 243 transitions. [2023-11-29 04:51:38,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 243 transitions. [2023-11-29 04:51:38,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:38,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 243 transitions. [2023-11-29 04:51:38,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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) [2023-11-29 04:51:38,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:51:38,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:51:38,623 INFO L175 Difference]: Start difference. First operand has 319 places, 749 transitions, 9565 flow. Second operand 5 states and 243 transitions. [2023-11-29 04:51:38,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 748 transitions, 10983 flow [2023-11-29 04:51:39,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 748 transitions, 10089 flow, removed 7 selfloop flow, removed 26 redundant places. [2023-11-29 04:51:39,131 INFO L231 Difference]: Finished difference. Result has 295 places, 680 transitions, 7961 flow [2023-11-29 04:51:39,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=8649, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7961, PETRI_PLACES=295, PETRI_TRANSITIONS=680} [2023-11-29 04:51:39,132 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 217 predicate places. [2023-11-29 04:51:39,132 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 680 transitions, 7961 flow [2023-11-29 04:51:39,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 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) [2023-11-29 04:51:39,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:39,132 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:39,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 04:51:39,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:39,333 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:39,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2124487430, now seen corresponding path program 2 times [2023-11-29 04:51:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:39,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540323330] [2023-11-29 04:51:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:39,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854321317] [2023-11-29 04:51:39,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:51:39,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:39,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:39,359 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:39,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 04:51:39,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:51:39,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:51:39,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:51:39,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:51:39,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:51:39,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540323330] [2023-11-29 04:51:39,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:51:39,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854321317] [2023-11-29 04:51:39,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854321317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:39,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:51:39,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-29 04:51:39,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186692671] [2023-11-29 04:51:39,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:39,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:51:39,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:51:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:51:39,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2023-11-29 04:51:39,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 680 transitions, 7961 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2023-11-29 04:51:39,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:39,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2023-11-29 04:51:39,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:43,593 INFO L124 PetriNetUnfolderBase]: 6107/14487 cut-off events. [2023-11-29 04:51:43,593 INFO L125 PetriNetUnfolderBase]: For 79813/79813 co-relation queries the response was YES. [2023-11-29 04:51:43,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63140 conditions, 14487 events. 6107/14487 cut-off events. For 79813/79813 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 109668 event pairs, 1890 based on Foata normal form. 156/14634 useless extension candidates. Maximal degree in co-relation 63065. Up to 6627 conditions per place. [2023-11-29 04:51:43,733 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 660 selfloop transitions, 28 changer transitions 0/715 dead transitions. [2023-11-29 04:51:43,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 715 transitions, 9505 flow [2023-11-29 04:51:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:51:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:51:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2023-11-29 04:51:43,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.651219512195122 [2023-11-29 04:51:43,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 267 transitions. [2023-11-29 04:51:43,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 267 transitions. [2023-11-29 04:51:43,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:43,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 267 transitions. [2023-11-29 04:51:43,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:43,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:51:43,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:51:43,736 INFO L175 Difference]: Start difference. First operand has 295 places, 680 transitions, 7961 flow. Second operand 5 states and 267 transitions. [2023-11-29 04:51:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 715 transitions, 9505 flow [2023-11-29 04:51:44,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 715 transitions, 8631 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-11-29 04:51:44,135 INFO L231 Difference]: Finished difference. Result has 278 places, 679 transitions, 7141 flow [2023-11-29 04:51:44,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=7085, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7141, PETRI_PLACES=278, PETRI_TRANSITIONS=679} [2023-11-29 04:51:44,136 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 200 predicate places. [2023-11-29 04:51:44,136 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 679 transitions, 7141 flow [2023-11-29 04:51:44,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2023-11-29 04:51:44,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:44,136 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:44,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 04:51:44,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:44,337 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:44,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:44,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1890872483, now seen corresponding path program 2 times [2023-11-29 04:51:44,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:44,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944666059] [2023-11-29 04:51:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:44,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:44,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:44,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007868098] [2023-11-29 04:51:44,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:51:44,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:44,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:44,359 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:44,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 04:51:44,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:51:44,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:51:44,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:51:44,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:51:51,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:51:51,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:51,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944666059] [2023-11-29 04:51:51,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:51:51,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007868098] [2023-11-29 04:51:51,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007868098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:51,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:51,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:51:51,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051778115] [2023-11-29 04:51:51,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:51,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:51:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:51:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:51:52,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 82 [2023-11-29 04:51:52,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 679 transitions, 7141 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:52,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:52,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 82 [2023-11-29 04:51:52,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:57,149 INFO L124 PetriNetUnfolderBase]: 6107/14341 cut-off events. [2023-11-29 04:51:57,149 INFO L125 PetriNetUnfolderBase]: For 78506/78506 co-relation queries the response was YES. [2023-11-29 04:51:57,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62304 conditions, 14341 events. 6107/14341 cut-off events. For 78506/78506 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 107599 event pairs, 3978 based on Foata normal form. 4/14291 useless extension candidates. Maximal degree in co-relation 62234. Up to 10681 conditions per place. [2023-11-29 04:51:57,253 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 638 selfloop transitions, 2 changer transitions 16/676 dead transitions. [2023-11-29 04:51:57,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 676 transitions, 8432 flow [2023-11-29 04:51:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:51:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:51:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2023-11-29 04:51:57,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560975609756098 [2023-11-29 04:51:57,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 228 transitions. [2023-11-29 04:51:57,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 228 transitions. [2023-11-29 04:51:57,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:57,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 228 transitions. [2023-11-29 04:51:57,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2023-11-29 04:51:57,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:51:57,255 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:51:57,255 INFO L175 Difference]: Start difference. First operand has 278 places, 679 transitions, 7141 flow. Second operand 5 states and 228 transitions. [2023-11-29 04:51:57,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 676 transitions, 8432 flow [2023-11-29 04:51:57,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 676 transitions, 8369 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 04:51:57,584 INFO L231 Difference]: Finished difference. Result has 272 places, 660 transitions, 6931 flow [2023-11-29 04:51:57,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=7065, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6931, PETRI_PLACES=272, PETRI_TRANSITIONS=660} [2023-11-29 04:51:57,584 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 194 predicate places. [2023-11-29 04:51:57,585 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 660 transitions, 6931 flow [2023-11-29 04:51:57,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:57,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:57,585 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:57,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-29 04:51:57,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:57,785 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:51:57,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1973478716, now seen corresponding path program 2 times [2023-11-29 04:51:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438166581] [2023-11-29 04:51:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:57,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:51:57,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987169306] [2023-11-29 04:51:57,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:51:57,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:57,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:57,806 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:57,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-29 04:51:58,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:51:58,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:51:58,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:51:58,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:52:00,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 04:52:00,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:00,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438166581] [2023-11-29 04:52:00,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:52:00,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987169306] [2023-11-29 04:52:00,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987169306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:00,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:52:00,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 04:52:00,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784998754] [2023-11-29 04:52:00,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:00,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:52:00,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:52:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:52:02,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2023-11-29 04:52:02,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 660 transitions, 6931 flow. Second operand has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 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) [2023-11-29 04:52:02,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:02,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2023-11-29 04:52:02,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:05,484 INFO L124 PetriNetUnfolderBase]: 5434/12062 cut-off events. [2023-11-29 04:52:05,484 INFO L125 PetriNetUnfolderBase]: For 58267/58267 co-relation queries the response was YES. [2023-11-29 04:52:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51602 conditions, 12062 events. 5434/12062 cut-off events. For 58267/58267 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 82945 event pairs, 315 based on Foata normal form. 78/12137 useless extension candidates. Maximal degree in co-relation 51534. Up to 3472 conditions per place. [2023-11-29 04:52:05,562 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 710 selfloop transitions, 17 changer transitions 8/750 dead transitions. [2023-11-29 04:52:05,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 750 transitions, 8822 flow [2023-11-29 04:52:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:52:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:52:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 401 transitions. [2023-11-29 04:52:05,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433604336043361 [2023-11-29 04:52:05,564 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 401 transitions. [2023-11-29 04:52:05,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 401 transitions. [2023-11-29 04:52:05,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:05,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 401 transitions. [2023-11-29 04:52:05,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 44.55555555555556) internal successors, (401), 9 states have internal predecessors, (401), 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) [2023-11-29 04:52:05,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2023-11-29 04:52:05,566 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2023-11-29 04:52:05,566 INFO L175 Difference]: Start difference. First operand has 272 places, 660 transitions, 6931 flow. Second operand 9 states and 401 transitions. [2023-11-29 04:52:05,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 750 transitions, 8822 flow [2023-11-29 04:52:05,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 750 transitions, 8767 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-11-29 04:52:05,815 INFO L231 Difference]: Finished difference. Result has 252 places, 652 transitions, 6770 flow [2023-11-29 04:52:05,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=6868, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6770, PETRI_PLACES=252, PETRI_TRANSITIONS=652} [2023-11-29 04:52:05,816 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 174 predicate places. [2023-11-29 04:52:05,816 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 652 transitions, 6770 flow [2023-11-29 04:52:05,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 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) [2023-11-29 04:52:05,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:05,816 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:05,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-29 04:52:06,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:06,017 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:52:06,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1184915833, now seen corresponding path program 1 times [2023-11-29 04:52:06,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:06,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816203652] [2023-11-29 04:52:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:06,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:06,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:52:06,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021332029] [2023-11-29 04:52:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:06,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:06,051 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:06,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-29 04:52:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:06,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:52:06,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:52:06,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 04:52:06,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:06,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816203652] [2023-11-29 04:52:06,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:52:06,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021332029] [2023-11-29 04:52:06,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021332029] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:06,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:52:06,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 04:52:06,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939967345] [2023-11-29 04:52:06,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:06,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:52:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:52:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:52:07,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 82 [2023-11-29 04:52:07,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 652 transitions, 6770 flow. Second operand has 15 states, 15 states have (on average 39.86666666666667) internal successors, (598), 15 states have internal predecessors, (598), 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) [2023-11-29 04:52:07,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:07,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 82 [2023-11-29 04:52:07,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:10,135 INFO L124 PetriNetUnfolderBase]: 3822/10107 cut-off events. [2023-11-29 04:52:10,135 INFO L125 PetriNetUnfolderBase]: For 49031/49031 co-relation queries the response was YES. [2023-11-29 04:52:10,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43185 conditions, 10107 events. 3822/10107 cut-off events. For 49031/49031 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 72346 event pairs, 852 based on Foata normal form. 156/10261 useless extension candidates. Maximal degree in co-relation 43125. Up to 2496 conditions per place. [2023-11-29 04:52:10,198 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 284 selfloop transitions, 447 changer transitions 31/780 dead transitions. [2023-11-29 04:52:10,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 780 transitions, 8988 flow [2023-11-29 04:52:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:52:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:52:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 607 transitions. [2023-11-29 04:52:10,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287456445993032 [2023-11-29 04:52:10,200 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 607 transitions. [2023-11-29 04:52:10,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 607 transitions. [2023-11-29 04:52:10,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:10,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 607 transitions. [2023-11-29 04:52:10,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 43.357142857142854) internal successors, (607), 14 states have internal predecessors, (607), 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) [2023-11-29 04:52:10,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 82.0) internal successors, (1230), 15 states have internal predecessors, (1230), 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) [2023-11-29 04:52:10,202 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 82.0) internal successors, (1230), 15 states have internal predecessors, (1230), 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) [2023-11-29 04:52:10,202 INFO L175 Difference]: Start difference. First operand has 252 places, 652 transitions, 6770 flow. Second operand 14 states and 607 transitions. [2023-11-29 04:52:10,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 780 transitions, 8988 flow [2023-11-29 04:52:10,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 780 transitions, 8919 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-11-29 04:52:10,387 INFO L231 Difference]: Finished difference. Result has 253 places, 665 transitions, 8032 flow [2023-11-29 04:52:10,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=6659, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8032, PETRI_PLACES=253, PETRI_TRANSITIONS=665} [2023-11-29 04:52:10,387 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 175 predicate places. [2023-11-29 04:52:10,387 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 665 transitions, 8032 flow [2023-11-29 04:52:10,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 39.86666666666667) internal successors, (598), 15 states have internal predecessors, (598), 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) [2023-11-29 04:52:10,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:10,388 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:10,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-11-29 04:52:10,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:10,588 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:52:10,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 698597910, now seen corresponding path program 2 times [2023-11-29 04:52:10,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:10,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060430298] [2023-11-29 04:52:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:10,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:10,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:52:10,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090483321] [2023-11-29 04:52:10,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:52:10,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:10,612 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:10,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-29 04:52:10,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:52:10,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:52:10,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:52:10,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 04:52:14,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 04:52:15,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060430298] [2023-11-29 04:52:15,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:52:15,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090483321] [2023-11-29 04:52:15,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090483321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:15,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:52:15,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2023-11-29 04:52:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033598200] [2023-11-29 04:52:15,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:15,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:52:15,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:52:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:52:20,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:52:24,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:52:28,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:52:35,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:52:42,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:52:42,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 04:52:42,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 665 transitions, 8032 flow. Second operand has 13 states, 13 states have (on average 35.69230769230769) internal successors, (464), 13 states have internal predecessors, (464), 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) [2023-11-29 04:52:42,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:42,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 04:52:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:52,410 INFO L124 PetriNetUnfolderBase]: 4482/10587 cut-off events. [2023-11-29 04:52:52,411 INFO L125 PetriNetUnfolderBase]: For 54470/54470 co-relation queries the response was YES. [2023-11-29 04:52:52,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46522 conditions, 10587 events. 4482/10587 cut-off events. For 54470/54470 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 71278 event pairs, 276 based on Foata normal form. 156/10739 useless extension candidates. Maximal degree in co-relation 46466. Up to 3132 conditions per place. [2023-11-29 04:52:52,489 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 581 selfloop transitions, 4 changer transitions 145/736 dead transitions. [2023-11-29 04:52:52,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 736 transitions, 9811 flow [2023-11-29 04:52:52,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:52:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:52:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 367 transitions. [2023-11-29 04:52:52,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475609756097561 [2023-11-29 04:52:52,491 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 367 transitions. [2023-11-29 04:52:52,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 367 transitions. [2023-11-29 04:52:52,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:52,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 367 transitions. [2023-11-29 04:52:52,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.7) internal successors, (367), 10 states have internal predecessors, (367), 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) [2023-11-29 04:52:52,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:52:52,493 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2023-11-29 04:52:52,493 INFO L175 Difference]: Start difference. First operand has 253 places, 665 transitions, 8032 flow. Second operand 10 states and 367 transitions. [2023-11-29 04:52:52,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 736 transitions, 9811 flow [2023-11-29 04:52:52,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 736 transitions, 9118 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-29 04:52:52,744 INFO L231 Difference]: Finished difference. Result has 254 places, 591 transitions, 6819 flow [2023-11-29 04:52:52,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=7332, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6819, PETRI_PLACES=254, PETRI_TRANSITIONS=591} [2023-11-29 04:52:52,745 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 176 predicate places. [2023-11-29 04:52:52,746 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 591 transitions, 6819 flow [2023-11-29 04:52:52,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.69230769230769) internal successors, (464), 13 states have internal predecessors, (464), 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) [2023-11-29 04:52:52,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:52,746 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:52,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-29 04:52:52,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:52,946 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-29 04:52:52,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:52,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2040441414, now seen corresponding path program 2 times [2023-11-29 04:52:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795623856] [2023-11-29 04:52:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:52,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:52:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707012742] [2023-11-29 04:52:52,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:52:52,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:52,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:52,981 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:52,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-29 04:52:53,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:52:53,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:52:53,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:52:53,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2023-11-29 04:52:53,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2023-11-29 04:52:53,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:53,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795623856] [2023-11-29 04:52:53,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:52:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707012742] [2023-11-29 04:52:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707012742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:53,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:52:53,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-29 04:52:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061895499] [2023-11-29 04:52:53,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:53,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:52:53,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:52:53,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:52:53,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2023-11-29 04:52:53,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 591 transitions, 6819 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2023-11-29 04:52:53,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:53,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2023-11-29 04:52:53,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:54,692 INFO L124 PetriNetUnfolderBase]: 736/3186 cut-off events. [2023-11-29 04:52:54,692 INFO L125 PetriNetUnfolderBase]: For 25681/25681 co-relation queries the response was YES. [2023-11-29 04:52:54,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18466 conditions, 3186 events. 736/3186 cut-off events. For 25681/25681 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 17634 event pairs, 0 based on Foata normal form. 31/3217 useless extension candidates. Maximal degree in co-relation 18411. Up to 830 conditions per place. [2023-11-29 04:52:54,712 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 590/590 dead transitions. [2023-11-29 04:52:54,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 590 transitions, 7939 flow [2023-11-29 04:52:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:52:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:52:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2023-11-29 04:52:54,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146341463414634 [2023-11-29 04:52:54,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 211 transitions. [2023-11-29 04:52:54,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 211 transitions. [2023-11-29 04:52:54,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:54,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 211 transitions. [2023-11-29 04:52:54,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2023-11-29 04:52:54,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:52:54,715 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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) [2023-11-29 04:52:54,715 INFO L175 Difference]: Start difference. First operand has 254 places, 591 transitions, 6819 flow. Second operand 5 states and 211 transitions. [2023-11-29 04:52:54,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 590 transitions, 7939 flow [2023-11-29 04:52:54,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 590 transitions, 7284 flow, removed 5 selfloop flow, removed 33 redundant places. [2023-11-29 04:52:54,927 INFO L231 Difference]: Finished difference. Result has 162 places, 0 transitions, 0 flow [2023-11-29 04:52:54,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=6118, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=162, PETRI_TRANSITIONS=0} [2023-11-29 04:52:54,928 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 84 predicate places. [2023-11-29 04:52:54,928 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 0 transitions, 0 flow [2023-11-29 04:52:54,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2023-11-29 04:52:54,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2023-11-29 04:52:54,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2023-11-29 04:52:54,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2023-11-29 04:52:54,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2023-11-29 04:52:54,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-11-29 04:52:55,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-29 04:52:55,134 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:55,139 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:52:55,139 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:52:55,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:52:55 BasicIcfg [2023-11-29 04:52:55,145 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:52:55,145 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:52:55,145 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:52:55,145 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:52:55,146 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:03" (3/4) ... [2023-11-29 04:52:55,147 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:52:55,150 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 04:52:55,150 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 04:52:55,161 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 203 nodes and edges [2023-11-29 04:52:55,162 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-11-29 04:52:55,163 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-29 04:52:55,163 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 04:52:55,278 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:52:55,279 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:52:55,279 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:52:55,280 INFO L158 Benchmark]: Toolchain (without parser) took 293160.02ms. Allocated memory was 161.5MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 129.3MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2023-11-29 04:52:55,281 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:52:55,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.88ms. Allocated memory is still 161.5MB. Free memory was 128.5MB in the beginning and 116.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:52:55,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.89ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 114.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:52:55,282 INFO L158 Benchmark]: Boogie Preprocessor took 60.36ms. Allocated memory is still 161.5MB. Free memory was 114.6MB in the beginning and 111.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:52:55,282 INFO L158 Benchmark]: RCFGBuilder took 973.73ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 111.2MB in the beginning and 158.7MB in the end (delta: -47.6MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2023-11-29 04:52:55,283 INFO L158 Benchmark]: TraceAbstraction took 291697.91ms. Allocated memory was 195.0MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 157.7MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2023-11-29 04:52:55,283 INFO L158 Benchmark]: Witness Printer took 134.46ms. Allocated memory is still 6.0GB. Free memory was 3.3GB in the beginning and 3.3GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 04:52:55,285 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.88ms. Allocated memory is still 161.5MB. Free memory was 128.5MB in the beginning and 116.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.89ms. Allocated memory is still 161.5MB. Free memory was 116.6MB in the beginning and 114.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.36ms. Allocated memory is still 161.5MB. Free memory was 114.6MB in the beginning and 111.2MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 973.73ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 111.2MB in the beginning and 158.7MB in the end (delta: -47.6MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. * TraceAbstraction took 291697.91ms. Allocated memory was 195.0MB in the beginning and 6.0GB in the end (delta: 5.8GB). Free memory was 157.7MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. * Witness Printer took 134.46ms. Allocated memory is still 6.0GB. Free memory was 3.3GB in the beginning and 3.3GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 291.6s, OverallIterations: 58, TraceHistogramMax: 23, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 215.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 7024 SdHoareTripleChecker+Valid, 90.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5950 mSDsluCounter, 2634 SdHoareTripleChecker+Invalid, 88.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 268 IncrementalHoareTripleChecker+Unchecked, 2316 mSDsCounter, 733 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20420 IncrementalHoareTripleChecker+Invalid, 21431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 733 mSolverCounterUnsat, 318 mSDtfsCounter, 20420 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3256 GetRequests, 2681 SyntacticMatches, 28 SemanticMatches, 547 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2082 ImplicationChecksByTransitivity, 62.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9565occurred in iteration=51, InterpolantAutomatonStates: 462, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 51.6s InterpolantComputationTime, 1861 NumberOfCodeBlocks, 1509 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 3056 ConstructedInterpolants, 313 QuantifiedInterpolants, 14281 SizeOfPredicates, 197 NumberOfNonLiveVariables, 15070 ConjunctsInSsa, 390 ConjunctsInUnsatCore, 89 InterpolantComputations, 31 PerfectInterpolantSequences, 3284/4171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:52:55,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f12547e-8565-4181-829b-1571b0d85c48/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE