./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme --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 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:14,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:14,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:47:14,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:14,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:14,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:14,205 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:14,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:14,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:14,207 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:14,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:14,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:14,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:14,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:14,211 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:14,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:14,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:14,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:14,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:14,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:14,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:14,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:14,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:14,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:14,217 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:47:14,217 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:14,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:14,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:14,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:14,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:14,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:14,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:14,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:14,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:14,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:14,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:14,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:14,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:14,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:14,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:14,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:14,237 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:14,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:14,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:14,238 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_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2023-11-26 11:47:14,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:14,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:14,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:14,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:14,559 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:14,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-26 11:47:17,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:17,920 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:17,921 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-26 11:47:17,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/data/1e824ff51/e64d77832b534b7aa7e530887123bf77/FLAG749b287a9 [2023-11-26 11:47:17,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/data/1e824ff51/e64d77832b534b7aa7e530887123bf77 [2023-11-26 11:47:17,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:17,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:17,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:17,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:17,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:17,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:17" (1/1) ... [2023-11-26 11:47:17,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b3131a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:17, skipping insertion in model container [2023-11-26 11:47:17,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:17" (1/1) ... [2023-11-26 11:47:18,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:18,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:18,297 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:18,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:18,352 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:18,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18 WrapperNode [2023-11-26 11:47:18,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:18,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:18,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:18,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:18,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,401 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2023-11-26 11:47:18,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:18,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:18,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:18,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:18,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,440 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 2, 2, 2, 7]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 11:47:18,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:18,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:18,469 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:18,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:18,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (1/1) ... [2023-11-26 11:47:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:18,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:18,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:18,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:47:18,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:47:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:47:18,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:47:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:47:18,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:47:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:47:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:47:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:47:18,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:47:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:47:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:47:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:47:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:47:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:47:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:47:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:47:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:47:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:18,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:47:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:47:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:47:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:47:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:47:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:47:18,584 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:47:18,741 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:18,745 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:19,264 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:19,656 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:19,656 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 11:47:19,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:19 BoogieIcfgContainer [2023-11-26 11:47:19,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:19,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:19,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:19,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:19,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:17" (1/3) ... [2023-11-26 11:47:19,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1bb757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:19, skipping insertion in model container [2023-11-26 11:47:19,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:18" (2/3) ... [2023-11-26 11:47:19,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1bb757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:19, skipping insertion in model container [2023-11-26 11:47:19,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:19" (3/3) ... [2023-11-26 11:47:19,675 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-11-26 11:47:19,692 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:47:19,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:19,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-26 11:47:19,703 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:47:19,780 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:47:19,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 173 flow [2023-11-26 11:47:19,887 INFO L124 PetriNetUnfolderBase]: 9/73 cut-off events. [2023-11-26 11:47:19,888 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:47:19,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 9/73 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 226 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-26 11:47:19,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 76 transitions, 173 flow [2023-11-26 11:47:19,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 157 flow [2023-11-26 11:47:19,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:19,927 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;@14df922a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:19,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-26 11:47:19,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:47:19,932 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:47:19,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:47:19,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:19,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:47:19,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:19,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash 507306, now seen corresponding path program 1 times [2023-11-26 11:47:19,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:19,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950842465] [2023-11-26 11:47:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:19,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:20,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:20,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950842465] [2023-11-26 11:47:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950842465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:20,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:20,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:20,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516923048] [2023-11-26 11:47:20,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:20,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:20,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:20,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-26 11:47:20,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:20,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:20,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-26 11:47:20,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:21,213 INFO L124 PetriNetUnfolderBase]: 2248/4373 cut-off events. [2023-11-26 11:47:21,213 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-26 11:47:21,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 4373 events. 2248/4373 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 33594 event pairs, 1576 based on Foata normal form. 216/3908 useless extension candidates. Maximal degree in co-relation 6844. Up to 3073 conditions per place. [2023-11-26 11:47:21,278 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 32 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2023-11-26 11:47:21,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 223 flow [2023-11-26 11:47:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2023-11-26 11:47:21,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888157894736842 [2023-11-26 11:47:21,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 179 transitions. [2023-11-26 11:47:21,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 179 transitions. [2023-11-26 11:47:21,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:21,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 179 transitions. [2023-11-26 11:47:21,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,312 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 157 flow. Second operand 4 states and 179 transitions. [2023-11-26 11:47:21,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 223 flow [2023-11-26 11:47:21,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 214 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:47:21,323 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 150 flow [2023-11-26 11:47:21,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-11-26 11:47:21,329 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-26 11:47:21,330 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 150 flow [2023-11-26 11:47:21,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:21,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-26 11:47:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:47:21,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:21,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash 15727023, now seen corresponding path program 1 times [2023-11-26 11:47:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:21,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863398984] [2023-11-26 11:47:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:21,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:21,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:21,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863398984] [2023-11-26 11:47:21,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863398984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:21,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:21,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:21,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440210893] [2023-11-26 11:47:21,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:21,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:21,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:21,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-26 11:47:21,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:21,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:21,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-26 11:47:21,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:22,186 INFO L124 PetriNetUnfolderBase]: 2249/4377 cut-off events. [2023-11-26 11:47:22,186 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-26 11:47:22,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 4377 events. 2249/4377 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 33631 event pairs, 1576 based on Foata normal form. 1/3697 useless extension candidates. Maximal degree in co-relation 7534. Up to 3078 conditions per place. [2023-11-26 11:47:22,231 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 35 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-26 11:47:22,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 240 flow [2023-11-26 11:47:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2023-11-26 11:47:22,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2023-11-26 11:47:22,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 180 transitions. [2023-11-26 11:47:22,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 180 transitions. [2023-11-26 11:47:22,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:22,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 180 transitions. [2023-11-26 11:47:22,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-26 11:47:22,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:22,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:22,240 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 150 flow. Second operand 4 states and 180 transitions. [2023-11-26 11:47:22,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 240 flow [2023-11-26 11:47:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:47:22,247 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 169 flow [2023-11-26 11:47:22,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-11-26 11:47:22,248 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-26 11:47:22,249 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 169 flow [2023-11-26 11:47:22,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:22,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:22,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:22,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:47:22,250 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:22,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash 487650081, now seen corresponding path program 1 times [2023-11-26 11:47:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817006197] [2023-11-26 11:47:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:22,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:22,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817006197] [2023-11-26 11:47:22,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817006197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:22,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:22,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982608671] [2023-11-26 11:47:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:22,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:22,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:22,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-26 11:47:22,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:22,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:22,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-26 11:47:22,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:23,374 INFO L124 PetriNetUnfolderBase]: 2862/5285 cut-off events. [2023-11-26 11:47:23,375 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-26 11:47:23,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9330 conditions, 5285 events. 2862/5285 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 40281 event pairs, 2067 based on Foata normal form. 243/4872 useless extension candidates. Maximal degree in co-relation 9304. Up to 3915 conditions per place. [2023-11-26 11:47:23,444 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 38 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-26 11:47:23,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 245 flow [2023-11-26 11:47:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-11-26 11:47:23,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2023-11-26 11:47:23,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-11-26 11:47:23,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-11-26 11:47:23,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:23,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-11-26 11:47:23,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:23,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:23,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:23,461 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 169 flow. Second operand 3 states and 138 transitions. [2023-11-26 11:47:23,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 245 flow [2023-11-26 11:47:23,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:23,466 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 166 flow [2023-11-26 11:47:23,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-11-26 11:47:23,467 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-11-26 11:47:23,468 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 166 flow [2023-11-26 11:47:23,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:23,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:23,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:47:23,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:47:23,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:23,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2062716119, now seen corresponding path program 1 times [2023-11-26 11:47:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117799118] [2023-11-26 11:47:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:23,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:23,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117799118] [2023-11-26 11:47:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117799118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:23,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:23,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:23,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173704960] [2023-11-26 11:47:23,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:23,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:23,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:23,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:23,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-26 11:47:23,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:23,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:23,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-26 11:47:23,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:24,164 INFO L124 PetriNetUnfolderBase]: 2249/4235 cut-off events. [2023-11-26 11:47:24,164 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-26 11:47:24,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 4235 events. 2249/4235 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31271 event pairs, 1576 based on Foata normal form. 200/3898 useless extension candidates. Maximal degree in co-relation 7399. Up to 3078 conditions per place. [2023-11-26 11:47:24,199 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 37 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-11-26 11:47:24,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 238 flow [2023-11-26 11:47:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2023-11-26 11:47:24,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2023-11-26 11:47:24,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 136 transitions. [2023-11-26 11:47:24,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 136 transitions. [2023-11-26 11:47:24,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:24,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 136 transitions. [2023-11-26 11:47:24,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,204 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 166 flow. Second operand 3 states and 136 transitions. [2023-11-26 11:47:24,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 238 flow [2023-11-26 11:47:24,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:24,208 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 162 flow [2023-11-26 11:47:24,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2023-11-26 11:47:24,209 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-26 11:47:24,209 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 162 flow [2023-11-26 11:47:24,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:24,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:47:24,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:47:24,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:24,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 372840542, now seen corresponding path program 1 times [2023-11-26 11:47:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035843066] [2023-11-26 11:47:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:24,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:24,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035843066] [2023-11-26 11:47:24,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035843066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:24,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85228606] [2023-11-26 11:47:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:24,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:24,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:24,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:24,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:47:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:24,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:47:24,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:24,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:24,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85228606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:24,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 11:47:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691630909] [2023-11-26 11:47:24,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:47:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:47:24,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:47:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-26 11:47:24,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 162 flow. Second operand has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:24,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:24,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-26 11:47:24,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:25,279 INFO L124 PetriNetUnfolderBase]: 2252/4247 cut-off events. [2023-11-26 11:47:25,280 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-26 11:47:25,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 4247 events. 2252/4247 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31437 event pairs, 1576 based on Foata normal form. 0/3705 useless extension candidates. Maximal degree in co-relation 7451. Up to 3081 conditions per place. [2023-11-26 11:47:25,308 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 35 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2023-11-26 11:47:25,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 297 flow [2023-11-26 11:47:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:47:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:47:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 401 transitions. [2023-11-26 11:47:25,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276315789473685 [2023-11-26 11:47:25,311 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 401 transitions. [2023-11-26 11:47:25,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 401 transitions. [2023-11-26 11:47:25,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:25,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 401 transitions. [2023-11-26 11:47:25,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.1) internal successors, (401), 10 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) [2023-11-26 11:47:25,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:25,317 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:25,317 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 162 flow. Second operand 10 states and 401 transitions. [2023-11-26 11:47:25,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 297 flow [2023-11-26 11:47:25,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:25,320 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 244 flow [2023-11-26 11:47:25,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-11-26 11:47:25,321 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-26 11:47:25,322 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 244 flow [2023-11-26 11:47:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:25,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:25,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:25,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:25,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:25,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:25,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:25,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2016722214, now seen corresponding path program 1 times [2023-11-26 11:47:25,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:25,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334430541] [2023-11-26 11:47:25,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:25,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:25,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:25,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334430541] [2023-11-26 11:47:25,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334430541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:25,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:25,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:25,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051338252] [2023-11-26 11:47:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:25,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:25,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:25,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:25,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-26 11:47:25,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:25,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:25,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-26 11:47:25,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:26,657 INFO L124 PetriNetUnfolderBase]: 4398/7672 cut-off events. [2023-11-26 11:47:26,657 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-11-26 11:47:26,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13864 conditions, 7672 events. 4398/7672 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 54594 event pairs, 2145 based on Foata normal form. 114/6986 useless extension candidates. Maximal degree in co-relation 13851. Up to 4127 conditions per place. [2023-11-26 11:47:26,739 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 71 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-11-26 11:47:26,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 445 flow [2023-11-26 11:47:26,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-26 11:47:26,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412280701754386 [2023-11-26 11:47:26,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-26 11:47:26,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-26 11:47:26,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:26,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-26 11:47:26,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:26,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:26,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:26,745 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 244 flow. Second operand 3 states and 169 transitions. [2023-11-26 11:47:26,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 445 flow [2023-11-26 11:47:26,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 415 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-26 11:47:26,752 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 235 flow [2023-11-26 11:47:26,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2023-11-26 11:47:26,757 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-26 11:47:26,757 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 235 flow [2023-11-26 11:47:26,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:26,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:26,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:47:26,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:26,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1866618306, now seen corresponding path program 1 times [2023-11-26 11:47:26,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:26,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687204794] [2023-11-26 11:47:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:26,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:26,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687204794] [2023-11-26 11:47:26,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687204794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:26,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:26,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:26,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132170197] [2023-11-26 11:47:26,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:26,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:26,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:26,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-26 11:47:26,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:26,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:26,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-26 11:47:26,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:28,307 INFO L124 PetriNetUnfolderBase]: 7576/13093 cut-off events. [2023-11-26 11:47:28,308 INFO L125 PetriNetUnfolderBase]: For 1465/1465 co-relation queries the response was YES. [2023-11-26 11:47:28,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25008 conditions, 13093 events. 7576/13093 cut-off events. For 1465/1465 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 101804 event pairs, 3336 based on Foata normal form. 196/11742 useless extension candidates. Maximal degree in co-relation 24995. Up to 6759 conditions per place. [2023-11-26 11:47:28,440 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 75 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-11-26 11:47:28,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 105 transitions, 461 flow [2023-11-26 11:47:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:28,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-11-26 11:47:28,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412280701754386 [2023-11-26 11:47:28,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-11-26 11:47:28,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-11-26 11:47:28,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:28,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-11-26 11:47:28,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:28,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:28,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:28,445 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 235 flow. Second operand 3 states and 169 transitions. [2023-11-26 11:47:28,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 105 transitions, 461 flow [2023-11-26 11:47:28,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:28,450 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 253 flow [2023-11-26 11:47:28,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-11-26 11:47:28,452 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-11-26 11:47:28,452 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 253 flow [2023-11-26 11:47:28,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:28,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:28,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:28,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:47:28,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:28,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2030592192, now seen corresponding path program 1 times [2023-11-26 11:47:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:28,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557240939] [2023-11-26 11:47:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:28,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:28,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557240939] [2023-11-26 11:47:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557240939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:28,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:28,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209204306] [2023-11-26 11:47:28,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:28,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:28,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:28,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:28,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:28,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-26 11:47:28,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:28,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:28,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-26 11:47:28,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:30,437 INFO L124 PetriNetUnfolderBase]: 8739/14105 cut-off events. [2023-11-26 11:47:30,437 INFO L125 PetriNetUnfolderBase]: For 2696/2696 co-relation queries the response was YES. [2023-11-26 11:47:30,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29208 conditions, 14105 events. 8739/14105 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 102118 event pairs, 4020 based on Foata normal form. 412/13870 useless extension candidates. Maximal degree in co-relation 29194. Up to 8321 conditions per place. [2023-11-26 11:47:30,584 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 97 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-11-26 11:47:30,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 126 transitions, 573 flow [2023-11-26 11:47:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-11-26 11:47:30,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7138157894736842 [2023-11-26 11:47:30,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-11-26 11:47:30,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-11-26 11:47:30,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:30,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-11-26 11:47:30,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 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) [2023-11-26 11:47:30,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,590 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,590 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 253 flow. Second operand 4 states and 217 transitions. [2023-11-26 11:47:30,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 126 transitions, 573 flow [2023-11-26 11:47:30,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:30,601 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 271 flow [2023-11-26 11:47:30,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2023-11-26 11:47:30,604 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2023-11-26 11:47:30,605 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 271 flow [2023-11-26 11:47:30,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:30,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:47:30,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:30,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1906121266, now seen corresponding path program 1 times [2023-11-26 11:47:30,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515761093] [2023-11-26 11:47:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:30,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515761093] [2023-11-26 11:47:30,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515761093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:30,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:30,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:30,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66680702] [2023-11-26 11:47:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:30,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:30,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:30,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:30,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:30,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-26 11:47:30,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:30,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-26 11:47:30,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:32,578 INFO L124 PetriNetUnfolderBase]: 8782/14515 cut-off events. [2023-11-26 11:47:32,578 INFO L125 PetriNetUnfolderBase]: For 6251/6251 co-relation queries the response was YES. [2023-11-26 11:47:32,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32047 conditions, 14515 events. 8782/14515 cut-off events. For 6251/6251 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 105558 event pairs, 4523 based on Foata normal form. 388/14313 useless extension candidates. Maximal degree in co-relation 32031. Up to 8576 conditions per place. [2023-11-26 11:47:32,725 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 100 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-11-26 11:47:32,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 129 transitions, 631 flow [2023-11-26 11:47:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-11-26 11:47:32,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7138157894736842 [2023-11-26 11:47:32,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-11-26 11:47:32,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-11-26 11:47:32,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:32,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-11-26 11:47:32,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 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) [2023-11-26 11:47:32,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:32,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:32,735 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 271 flow. Second operand 4 states and 217 transitions. [2023-11-26 11:47:32,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 129 transitions, 631 flow [2023-11-26 11:47:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 129 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:32,768 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 286 flow [2023-11-26 11:47:32,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-11-26 11:47:32,771 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 17 predicate places. [2023-11-26 11:47:32,772 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 286 flow [2023-11-26 11:47:32,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:32,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:32,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:32,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:47:32,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:32,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -924297639, now seen corresponding path program 1 times [2023-11-26 11:47:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:32,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590981461] [2023-11-26 11:47:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:32,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:32,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:32,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590981461] [2023-11-26 11:47:32,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590981461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:32,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084105712] [2023-11-26 11:47:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:32,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:32,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:32,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-26 11:47:32,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:32,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:32,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-26 11:47:32,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:35,369 INFO L124 PetriNetUnfolderBase]: 13468/22437 cut-off events. [2023-11-26 11:47:35,369 INFO L125 PetriNetUnfolderBase]: For 11622/11622 co-relation queries the response was YES. [2023-11-26 11:47:35,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50622 conditions, 22437 events. 13468/22437 cut-off events. For 11622/11622 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 174706 event pairs, 5563 based on Foata normal form. 314/21190 useless extension candidates. Maximal degree in co-relation 50604. Up to 10846 conditions per place. [2023-11-26 11:47:35,749 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 78 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2023-11-26 11:47:35,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 570 flow [2023-11-26 11:47:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2023-11-26 11:47:35,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2023-11-26 11:47:35,751 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 204 transitions. [2023-11-26 11:47:35,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 204 transitions. [2023-11-26 11:47:35,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:35,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 204 transitions. [2023-11-26 11:47:35,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:35,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:35,754 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:35,754 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 286 flow. Second operand 4 states and 204 transitions. [2023-11-26 11:47:35,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 570 flow [2023-11-26 11:47:35,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:47:35,798 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 325 flow [2023-11-26 11:47:35,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2023-11-26 11:47:35,799 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-11-26 11:47:35,799 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 325 flow [2023-11-26 11:47:35,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:35,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:35,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:35,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:47:35,800 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:35,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:35,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1411543837, now seen corresponding path program 1 times [2023-11-26 11:47:35,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:35,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904820869] [2023-11-26 11:47:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:35,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904820869] [2023-11-26 11:47:35,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904820869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:35,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:35,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510689331] [2023-11-26 11:47:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:35,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:35,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:35,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 76 [2023-11-26 11:47:35,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:35,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:35,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 76 [2023-11-26 11:47:35,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:38,406 INFO L124 PetriNetUnfolderBase]: 12043/20368 cut-off events. [2023-11-26 11:47:38,407 INFO L125 PetriNetUnfolderBase]: For 11592/11592 co-relation queries the response was YES. [2023-11-26 11:47:38,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48290 conditions, 20368 events. 12043/20368 cut-off events. For 11592/11592 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 160467 event pairs, 8035 based on Foata normal form. 1/19193 useless extension candidates. Maximal degree in co-relation 48270. Up to 15537 conditions per place. [2023-11-26 11:47:38,619 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 52 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-26 11:47:38,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 84 transitions, 425 flow [2023-11-26 11:47:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:47:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 11:47:38,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6535087719298246 [2023-11-26 11:47:38,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 11:47:38,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 11:47:38,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:38,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 11:47:38,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:38,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:38,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:38,628 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 325 flow. Second operand 3 states and 149 transitions. [2023-11-26 11:47:38,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 84 transitions, 425 flow [2023-11-26 11:47:38,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 84 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:47:38,689 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 317 flow [2023-11-26 11:47:38,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2023-11-26 11:47:38,691 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-11-26 11:47:38,692 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 317 flow [2023-11-26 11:47:38,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:38,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:38,692 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 11:47:38,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:47:38,693 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:38,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:38,695 INFO L85 PathProgramCache]: Analyzing trace with hash -479404817, now seen corresponding path program 2 times [2023-11-26 11:47:38,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:38,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151371489] [2023-11-26 11:47:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151371489] [2023-11-26 11:47:38,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151371489] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066895521] [2023-11-26 11:47:38,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:47:38,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:38,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:38,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:38,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:47:39,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:47:39,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:39,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:39,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:47:39,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:47:39,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066895521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:39,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:39,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-26 11:47:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682517947] [2023-11-26 11:47:39,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:39,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:47:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:47:39,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:47:39,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 76 [2023-11-26 11:47:39,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 317 flow. Second operand has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:39,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:39,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 76 [2023-11-26 11:47:39,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:42,020 INFO L124 PetriNetUnfolderBase]: 12044/20371 cut-off events. [2023-11-26 11:47:42,020 INFO L125 PetriNetUnfolderBase]: For 11606/11606 co-relation queries the response was YES. [2023-11-26 11:47:42,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48300 conditions, 20371 events. 12044/20371 cut-off events. For 11606/11606 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 160465 event pairs, 8035 based on Foata normal form. 2/19197 useless extension candidates. Maximal degree in co-relation 48279. Up to 15529 conditions per place. [2023-11-26 11:47:42,232 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 39 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2023-11-26 11:47:42,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 438 flow [2023-11-26 11:47:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:47:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 11:47:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 541 transitions. [2023-11-26 11:47:42,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084586466165414 [2023-11-26 11:47:42,241 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 541 transitions. [2023-11-26 11:47:42,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 541 transitions. [2023-11-26 11:47:42,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:42,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 541 transitions. [2023-11-26 11:47:42,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 38.642857142857146) internal successors, (541), 14 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:42,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 76.0) internal successors, (1140), 15 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:42,255 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 76.0) internal successors, (1140), 15 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:42,255 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 317 flow. Second operand 14 states and 541 transitions. [2023-11-26 11:47:42,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 438 flow [2023-11-26 11:47:42,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 422 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-26 11:47:42,317 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 344 flow [2023-11-26 11:47:42,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=344, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2023-11-26 11:47:42,319 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 27 predicate places. [2023-11-26 11:47:42,319 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 344 flow [2023-11-26 11:47:42,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 36.142857142857146) internal successors, (506), 14 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:42,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:42,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:42,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:42,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:47:42,528 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:42,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1217117428, now seen corresponding path program 1 times [2023-11-26 11:47:42,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:42,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937364668] [2023-11-26 11:47:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:42,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:42,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937364668] [2023-11-26 11:47:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937364668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:42,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:42,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:47:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356130952] [2023-11-26 11:47:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:42,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:47:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:47:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:47:42,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 76 [2023-11-26 11:47:42,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:42,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:42,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 76 [2023-11-26 11:47:42,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:45,268 INFO L124 PetriNetUnfolderBase]: 13946/22611 cut-off events. [2023-11-26 11:47:45,268 INFO L125 PetriNetUnfolderBase]: For 14785/14785 co-relation queries the response was YES. [2023-11-26 11:47:45,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54026 conditions, 22611 events. 13946/22611 cut-off events. For 14785/14785 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 169213 event pairs, 1651 based on Foata normal form. 942/23429 useless extension candidates. Maximal degree in co-relation 54009. Up to 9986 conditions per place. [2023-11-26 11:47:45,449 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 99 selfloop transitions, 11 changer transitions 0/134 dead transitions. [2023-11-26 11:47:45,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 738 flow [2023-11-26 11:47:45,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:47:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:47:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2023-11-26 11:47:45,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2023-11-26 11:47:45,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 242 transitions. [2023-11-26 11:47:45,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 242 transitions. [2023-11-26 11:47:45,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:45,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 242 transitions. [2023-11-26 11:47:45,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-11-26 11:47:45,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,456 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,456 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 344 flow. Second operand 5 states and 242 transitions. [2023-11-26 11:47:45,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 738 flow [2023-11-26 11:47:45,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 678 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-11-26 11:47:45,511 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 300 flow [2023-11-26 11:47:45,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-26 11:47:45,513 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-11-26 11:47:45,513 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 300 flow [2023-11-26 11:47:45,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:45,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:45,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:47:45,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:45,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1217116403, now seen corresponding path program 1 times [2023-11-26 11:47:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642936901] [2023-11-26 11:47:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:45,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642936901] [2023-11-26 11:47:45,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642936901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:45,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:45,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747534868] [2023-11-26 11:47:45,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:45,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:45,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 76 [2023-11-26 11:47:45,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:45,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:45,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 76 [2023-11-26 11:47:45,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:48,004 INFO L124 PetriNetUnfolderBase]: 12604/20787 cut-off events. [2023-11-26 11:47:48,004 INFO L125 PetriNetUnfolderBase]: For 17645/17645 co-relation queries the response was YES. [2023-11-26 11:47:48,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51230 conditions, 20787 events. 12604/20787 cut-off events. For 17645/17645 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 157848 event pairs, 4435 based on Foata normal form. 628/20475 useless extension candidates. Maximal degree in co-relation 51216. Up to 8613 conditions per place. [2023-11-26 11:47:48,174 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 79 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-11-26 11:47:48,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 107 transitions, 546 flow [2023-11-26 11:47:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:47:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2023-11-26 11:47:48,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2023-11-26 11:47:48,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 176 transitions. [2023-11-26 11:47:48,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 176 transitions. [2023-11-26 11:47:48,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:48,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 176 transitions. [2023-11-26 11:47:48,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:48,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:48,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:48,181 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 300 flow. Second operand 4 states and 176 transitions. [2023-11-26 11:47:48,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 107 transitions, 546 flow [2023-11-26 11:47:48,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 107 transitions, 508 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:47:48,263 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 260 flow [2023-11-26 11:47:48,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-11-26 11:47:48,264 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2023-11-26 11:47:48,264 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 260 flow [2023-11-26 11:47:48,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:48,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:48,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:48,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:47:48,265 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:48,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1825344454, now seen corresponding path program 1 times [2023-11-26 11:47:48,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:48,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232782797] [2023-11-26 11:47:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:48,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:48,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232782797] [2023-11-26 11:47:48,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232782797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:48,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037240169] [2023-11-26 11:47:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:48,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:48,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:48,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:48,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:47:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:48,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:47:48,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:48,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:48,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037240169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:48,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:48,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2023-11-26 11:47:48,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567954587] [2023-11-26 11:47:48,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:48,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:47:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:47:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:47:49,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 76 [2023-11-26 11:47:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 260 flow. Second operand has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:49,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:49,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 76 [2023-11-26 11:47:49,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:53,812 INFO L124 PetriNetUnfolderBase]: 24362/37510 cut-off events. [2023-11-26 11:47:53,812 INFO L125 PetriNetUnfolderBase]: For 22638/22638 co-relation queries the response was YES. [2023-11-26 11:47:53,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91859 conditions, 37510 events. 24362/37510 cut-off events. For 22638/22638 co-relation queries the response was YES. Maximal size of possible extension queue 1097. Compared 279174 event pairs, 7322 based on Foata normal form. 620/37698 useless extension candidates. Maximal degree in co-relation 91845. Up to 12239 conditions per place. [2023-11-26 11:47:54,094 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 204 selfloop transitions, 22 changer transitions 0/247 dead transitions. [2023-11-26 11:47:54,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 247 transitions, 1292 flow [2023-11-26 11:47:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:47:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:47:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 508 transitions. [2023-11-26 11:47:54,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2023-11-26 11:47:54,098 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 508 transitions. [2023-11-26 11:47:54,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 508 transitions. [2023-11-26 11:47:54,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:47:54,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 508 transitions. [2023-11-26 11:47:54,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 42.333333333333336) internal successors, (508), 12 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:54,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:54,104 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:54,105 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 260 flow. Second operand 12 states and 508 transitions. [2023-11-26 11:47:54,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 247 transitions, 1292 flow [2023-11-26 11:47:54,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 247 transitions, 1248 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:47:54,230 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 348 flow [2023-11-26 11:47:54,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-11-26 11:47:54,231 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 25 predicate places. [2023-11-26 11:47:54,231 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 348 flow [2023-11-26 11:47:54,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.466666666666665) internal successors, (442), 15 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:54,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:47:54,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:54,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:54,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:47:54,432 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:47:54,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:54,433 INFO L85 PathProgramCache]: Analyzing trace with hash 924065997, now seen corresponding path program 1 times [2023-11-26 11:47:54,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:54,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340376933] [2023-11-26 11:47:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:54,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:54,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340376933] [2023-11-26 11:47:54,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340376933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:54,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323002143] [2023-11-26 11:47:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:54,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:54,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:54,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:54,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:47:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:54,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:47:54,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:54,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323002143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:55,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:55,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-26 11:47:55,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160406076] [2023-11-26 11:47:55,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:55,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:47:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:47:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:47:55,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2023-11-26 11:47:55,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 348 flow. Second operand has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:55,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:47:55,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2023-11-26 11:47:55,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:47:59,951 INFO L124 PetriNetUnfolderBase]: 23587/36339 cut-off events. [2023-11-26 11:47:59,951 INFO L125 PetriNetUnfolderBase]: For 32429/32429 co-relation queries the response was YES. [2023-11-26 11:48:00,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93726 conditions, 36339 events. 23587/36339 cut-off events. For 32429/32429 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 266681 event pairs, 14425 based on Foata normal form. 0/34395 useless extension candidates. Maximal degree in co-relation 93709. Up to 26224 conditions per place. [2023-11-26 11:48:00,200 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 98 selfloop transitions, 18 changer transitions 14/154 dead transitions. [2023-11-26 11:48:00,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 154 transitions, 872 flow [2023-11-26 11:48:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:48:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:48:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 332 transitions. [2023-11-26 11:48:00,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2023-11-26 11:48:00,203 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 332 transitions. [2023-11-26 11:48:00,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 332 transitions. [2023-11-26 11:48:00,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:48:00,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 332 transitions. [2023-11-26 11:48:00,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.888888888888886) internal successors, (332), 9 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) [2023-11-26 11:48:00,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:00,208 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:00,208 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 348 flow. Second operand 9 states and 332 transitions. [2023-11-26 11:48:00,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 154 transitions, 872 flow [2023-11-26 11:48:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 154 transitions, 843 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:48:00,368 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 396 flow [2023-11-26 11:48:00,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=396, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2023-11-26 11:48:00,369 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 30 predicate places. [2023-11-26 11:48:00,369 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 396 flow [2023-11-26 11:48:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.055555555555557) internal successors, (505), 18 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:00,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:48:00,370 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:00,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:48:00,571 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-26 11:48:00,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash -30866222, now seen corresponding path program 1 times [2023-11-26 11:48:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501021847] [2023-11-26 11:48:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:00,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:00,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501021847] [2023-11-26 11:48:00,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501021847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207324667] [2023-11-26 11:48:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:00,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:00,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:00,652 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:00,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34798c82-7bcb-488c-a164-4b41297421a0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:48:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:00,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:00,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:00,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207324667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:01,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:01,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-11-26 11:48:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909335822] [2023-11-26 11:48:01,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:01,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:48:01,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:48:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:48:01,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 76 [2023-11-26 11:48:01,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 396 flow. Second operand has 14 states, 14 states have (on average 28.142857142857142) internal successors, (394), 14 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:01,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:48:01,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 76 [2023-11-26 11:48:01,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand