./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:25:07,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:25:07,354 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:25:07,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:25:07,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:25:07,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:25:07,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:25:07,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:25:07,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:25:07,383 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:25:07,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:25:07,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:25:07,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:25:07,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:25:07,386 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:25:07,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:25:07,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:25:07,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:25:07,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:25:07,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:25:07,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:25:07,394 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:25:07,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:25:07,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:25:07,395 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:25:07,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:25:07,395 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:25:07,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:25:07,396 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:25:07,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:25:07,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:25:07,397 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:25:07,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:25:07,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:25:07,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:25:07,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:25:07,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:25:07,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:25:07,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:25:07,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:25:07,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:25:07,400 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:25:07,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:25:07,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:25:07,400 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_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47976145f2a7f206dd7d2e7a0ffeac879f94f33f7a5b87161ebd997173567eb0 [2023-11-29 01:25:07,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:25:07,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:25:07,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:25:07,642 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:25:07,642 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:25:07,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-29 01:25:10,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:25:10,622 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:25:10,623 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-29 01:25:10,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/data/c577fa332/b81ae2641ce44105800e89821d67e3c8/FLAG81ce91bd2 [2023-11-29 01:25:10,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/data/c577fa332/b81ae2641ce44105800e89821d67e3c8 [2023-11-29 01:25:10,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:25:10,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:25:10,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:25:10,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:25:10,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:25:10,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:10,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269804e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10, skipping insertion in model container [2023-11-29 01:25:10,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:10,699 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:25:10,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:25:10,931 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:25:10,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:25:10,999 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:25:10,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10 WrapperNode [2023-11-29 01:25:11,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:25:11,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:25:11,001 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:25:11,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:25:11,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,074 INFO L138 Inliner]: procedures = 26, calls = 77, calls flagged for inlining = 29, calls inlined = 43, statements flattened = 740 [2023-11-29 01:25:11,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:25:11,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:25:11,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:25:11,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:25:11,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,132 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 27, 2, 2, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2023-11-29 01:25:11,132 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:25:11,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:25:11,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:25:11,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:25:11,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (1/1) ... [2023-11-29 01:25:11,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:25:11,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:11,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:25:11,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:25:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:25:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:25:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:25:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:25:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:25:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:25:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:25:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:25:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:25:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:25:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:25:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:25:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:25:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:25:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:25:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:25:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 01:25:11,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 01:25:11,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:25:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:25:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:25:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:25:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:25:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:25:11,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:25:11,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:25:11,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:25:11,268 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:25:11,417 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:25:11,419 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:25:12,288 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:25:13,013 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:25:13,013 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 01:25:13,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:25:13 BoogieIcfgContainer [2023-11-29 01:25:13,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:25:13,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:25:13,016 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:25:13,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:25:13,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:25:10" (1/3) ... [2023-11-29 01:25:13,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a8f34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:25:13, skipping insertion in model container [2023-11-29 01:25:13,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:25:10" (2/3) ... [2023-11-29 01:25:13,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a8f34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:25:13, skipping insertion in model container [2023-11-29 01:25:13,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:25:13" (3/3) ... [2023-11-29 01:25:13,023 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-11-29 01:25:13,032 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:25:13,043 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:25:13,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-11-29 01:25:13,044 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:25:13,247 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:25:13,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 250 transitions, 521 flow [2023-11-29 01:25:13,389 INFO L124 PetriNetUnfolderBase]: 39/247 cut-off events. [2023-11-29 01:25:13,390 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 01:25:13,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 247 events. 39/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1437 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 225. Up to 2 conditions per place. [2023-11-29 01:25:13,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 250 transitions, 521 flow [2023-11-29 01:25:13,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 245 transitions, 505 flow [2023-11-29 01:25:13,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:25:13,432 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;@1e127e3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:25:13,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2023-11-29 01:25:13,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:25:13,437 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 01:25:13,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 01:25:13,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:13,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 01:25:13,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 01:25:13,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2289972, now seen corresponding path program 1 times [2023-11-29 01:25:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936451142] [2023-11-29 01:25:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:13,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936451142] [2023-11-29 01:25:13,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936451142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:13,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:25:13,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:25:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290213568] [2023-11-29 01:25:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:13,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:25:13,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:25:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:25:13,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 01:25:13,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 245 transitions, 505 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:13,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:13,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 01:25:13,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:30,368 INFO L124 PetriNetUnfolderBase]: 113811/204994 cut-off events. [2023-11-29 01:25:30,368 INFO L125 PetriNetUnfolderBase]: For 2275/2275 co-relation queries the response was YES. [2023-11-29 01:25:30,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352429 conditions, 204994 events. 113811/204994 cut-off events. For 2275/2275 co-relation queries the response was YES. Maximal size of possible extension queue 10481. Compared 2380908 event pairs, 74253 based on Foata normal form. 3681/167335 useless extension candidates. Maximal degree in co-relation 341590. Up to 145635 conditions per place. [2023-11-29 01:25:32,029 INFO L140 encePairwiseOnDemand]: 231/250 looper letters, 118 selfloop transitions, 10 changer transitions 0/251 dead transitions. [2023-11-29 01:25:32,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 251 transitions, 773 flow [2023-11-29 01:25:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:25:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 01:25:32,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 641 transitions. [2023-11-29 01:25:32,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.641 [2023-11-29 01:25:32,049 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 641 transitions. [2023-11-29 01:25:32,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 641 transitions. [2023-11-29 01:25:32,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:32,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 641 transitions. [2023-11-29 01:25:32,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:32,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:32,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:32,066 INFO L175 Difference]: Start difference. First operand has 216 places, 245 transitions, 505 flow. Second operand 4 states and 641 transitions. [2023-11-29 01:25:32,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 251 transitions, 773 flow [2023-11-29 01:25:32,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 251 transitions, 764 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 01:25:32,141 INFO L231 Difference]: Finished difference. Result has 217 places, 251 transitions, 578 flow [2023-11-29 01:25:32,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=578, PETRI_PLACES=217, PETRI_TRANSITIONS=251} [2023-11-29 01:25:32,147 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2023-11-29 01:25:32,147 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 251 transitions, 578 flow [2023-11-29 01:25:32,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:32,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:32,148 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 01:25:32,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:25:32,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 01:25:32,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash -496749115, now seen corresponding path program 1 times [2023-11-29 01:25:32,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:32,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771018566] [2023-11-29 01:25:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:32,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771018566] [2023-11-29 01:25:32,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771018566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009990971] [2023-11-29 01:25:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:32,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:32,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:32,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:32,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:25:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:32,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:25:32,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:32,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:32,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009990971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:32,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:25:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 01:25:32,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840110855] [2023-11-29 01:25:32,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:32,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:25:32,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:32,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:25:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:25:32,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 01:25:32,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 251 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:32,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:32,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 01:25:32,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:25:47,481 INFO L124 PetriNetUnfolderBase]: 113811/204991 cut-off events. [2023-11-29 01:25:47,481 INFO L125 PetriNetUnfolderBase]: For 561/561 co-relation queries the response was YES. [2023-11-29 01:25:47,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351834 conditions, 204991 events. 113811/204991 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2380936 event pairs, 74253 based on Foata normal form. 3/163659 useless extension candidates. Maximal degree in co-relation 351761. Up to 145620 conditions per place. [2023-11-29 01:25:49,119 INFO L140 encePairwiseOnDemand]: 237/250 looper letters, 108 selfloop transitions, 17 changer transitions 0/248 dead transitions. [2023-11-29 01:25:49,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 248 transitions, 816 flow [2023-11-29 01:25:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:25:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:25:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 884 transitions. [2023-11-29 01:25:49,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5893333333333334 [2023-11-29 01:25:49,124 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 884 transitions. [2023-11-29 01:25:49,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 884 transitions. [2023-11-29 01:25:49,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:25:49,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 884 transitions. [2023-11-29 01:25:49,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.33333333333334) internal successors, (884), 6 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,136 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,136 INFO L175 Difference]: Start difference. First operand has 217 places, 251 transitions, 578 flow. Second operand 6 states and 884 transitions. [2023-11-29 01:25:49,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 248 transitions, 816 flow [2023-11-29 01:25:49,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 248 transitions, 816 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 01:25:49,145 INFO L231 Difference]: Finished difference. Result has 219 places, 248 transitions, 600 flow [2023-11-29 01:25:49,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=600, PETRI_PLACES=219, PETRI_TRANSITIONS=248} [2023-11-29 01:25:49,147 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 3 predicate places. [2023-11-29 01:25:49,147 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 248 transitions, 600 flow [2023-11-29 01:25:49,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:25:49,148 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 01:25:49,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:25:49,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:49,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 01:25:49,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1780648804, now seen corresponding path program 1 times [2023-11-29 01:25:49,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:49,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969858987] [2023-11-29 01:25:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:49,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969858987] [2023-11-29 01:25:49,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969858987] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:49,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020293949] [2023-11-29 01:25:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:49,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:49,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:49,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:25:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:49,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:25:49,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:49,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020293949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:49,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:25:49,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 01:25:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462134769] [2023-11-29 01:25:49,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:49,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:25:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:49,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:25:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:25:49,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 01:25:49,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 248 transitions, 600 flow. Second operand has 12 states, 12 states have (on average 127.08333333333333) internal successors, (1525), 12 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:25:49,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:25:49,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 01:25:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:04,518 INFO L124 PetriNetUnfolderBase]: 113820/205027 cut-off events. [2023-11-29 01:26:04,518 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2023-11-29 01:26:05,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351975 conditions, 205027 events. 113820/205027 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2381591 event pairs, 74253 based on Foata normal form. 9/163701 useless extension candidates. Maximal degree in co-relation 351763. Up to 145635 conditions per place. [2023-11-29 01:26:05,838 INFO L140 encePairwiseOnDemand]: 237/250 looper letters, 115 selfloop transitions, 37 changer transitions 0/275 dead transitions. [2023-11-29 01:26:05,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 275 transitions, 1078 flow [2023-11-29 01:26:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:26:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 01:26:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1421 transitions. [2023-11-29 01:26:05,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684 [2023-11-29 01:26:05,843 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1421 transitions. [2023-11-29 01:26:05,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1421 transitions. [2023-11-29 01:26:05,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:05,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1421 transitions. [2023-11-29 01:26:05,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.1) internal successors, (1421), 10 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:05,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 250.0) internal successors, (2750), 11 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:05,854 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 250.0) internal successors, (2750), 11 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:05,854 INFO L175 Difference]: Start difference. First operand has 219 places, 248 transitions, 600 flow. Second operand 10 states and 1421 transitions. [2023-11-29 01:26:05,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 275 transitions, 1078 flow [2023-11-29 01:26:05,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 275 transitions, 995 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-29 01:26:05,864 INFO L231 Difference]: Finished difference. Result has 226 places, 275 transitions, 815 flow [2023-11-29 01:26:05,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=815, PETRI_PLACES=226, PETRI_TRANSITIONS=275} [2023-11-29 01:26:05,866 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 10 predicate places. [2023-11-29 01:26:05,866 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 275 transitions, 815 flow [2023-11-29 01:26:05,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 127.08333333333333) internal successors, (1525), 12 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:05,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:05,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:05,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:26:06,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:06,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 01:26:06,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1716141362, now seen corresponding path program 1 times [2023-11-29 01:26:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:06,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312984404] [2023-11-29 01:26:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:06,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:06,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:06,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312984404] [2023-11-29 01:26:06,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312984404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:26:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973905716] [2023-11-29 01:26:06,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:26:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:26:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:26:06,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 250 [2023-11-29 01:26:06,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 275 transitions, 815 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:06,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:06,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 250 [2023-11-29 01:26:06,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:22,615 INFO L124 PetriNetUnfolderBase]: 113817/205024 cut-off events. [2023-11-29 01:26:22,615 INFO L125 PetriNetUnfolderBase]: For 655/655 co-relation queries the response was YES. [2023-11-29 01:26:23,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351985 conditions, 205024 events. 113817/205024 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2381481 event pairs, 74253 based on Foata normal form. 3/163693 useless extension candidates. Maximal degree in co-relation 351887. Up to 145649 conditions per place. [2023-11-29 01:26:23,966 INFO L140 encePairwiseOnDemand]: 243/250 looper letters, 134 selfloop transitions, 12 changer transitions 0/272 dead transitions. [2023-11-29 01:26:23,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 272 transitions, 1093 flow [2023-11-29 01:26:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:26:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:26:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-11-29 01:26:23,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6906666666666667 [2023-11-29 01:26:23,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-11-29 01:26:23,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-11-29 01:26:23,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:23,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-11-29 01:26:23,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:23,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:23,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:23,976 INFO L175 Difference]: Start difference. First operand has 226 places, 275 transitions, 815 flow. Second operand 3 states and 518 transitions. [2023-11-29 01:26:23,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 272 transitions, 1093 flow [2023-11-29 01:26:23,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 272 transitions, 1045 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-29 01:26:23,985 INFO L231 Difference]: Finished difference. Result has 225 places, 272 transitions, 777 flow [2023-11-29 01:26:23,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=777, PETRI_PLACES=225, PETRI_TRANSITIONS=272} [2023-11-29 01:26:23,987 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 9 predicate places. [2023-11-29 01:26:23,987 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 272 transitions, 777 flow [2023-11-29 01:26:23,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:23,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:23,988 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 01:26:23,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:26:23,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 01:26:23,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:23,989 INFO L85 PathProgramCache]: Analyzing trace with hash -852014827, now seen corresponding path program 2 times [2023-11-29 01:26:23,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:23,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997778879] [2023-11-29 01:26:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:23,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:26:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:24,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997778879] [2023-11-29 01:26:24,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997778879] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:24,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379657571] [2023-11-29 01:26:24,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:26:24,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:24,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:26:24,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:26:24,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:26:24,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:26:24,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:26:24,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:26:24,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:26:24,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:26:24,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379657571] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:26:24,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:26:24,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-29 01:26:24,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624332535] [2023-11-29 01:26:24,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:24,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:26:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:26:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:26:24,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 250 [2023-11-29 01:26:24,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 272 transitions, 777 flow. Second operand has 15 states, 15 states have (on average 127.33333333333333) internal successors, (1910), 15 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:24,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:24,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 250 [2023-11-29 01:26:24,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:26:40,810 INFO L124 PetriNetUnfolderBase]: 113820/205027 cut-off events. [2023-11-29 01:26:40,810 INFO L125 PetriNetUnfolderBase]: For 631/631 co-relation queries the response was YES. [2023-11-29 01:26:41,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351976 conditions, 205027 events. 113820/205027 cut-off events. For 631/631 co-relation queries the response was YES. Maximal size of possible extension queue 10482. Compared 2381247 event pairs, 74253 based on Foata normal form. 3/163697 useless extension candidates. Maximal degree in co-relation 351874. Up to 145623 conditions per place. [2023-11-29 01:26:42,155 INFO L140 encePairwiseOnDemand]: 237/250 looper letters, 103 selfloop transitions, 49 changer transitions 0/275 dead transitions. [2023-11-29 01:26:42,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 275 transitions, 1088 flow [2023-11-29 01:26:42,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:26:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 01:26:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1793 transitions. [2023-11-29 01:26:42,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516923076923077 [2023-11-29 01:26:42,163 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1793 transitions. [2023-11-29 01:26:42,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1793 transitions. [2023-11-29 01:26:42,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:26:42,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1793 transitions. [2023-11-29 01:26:42,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 137.92307692307693) internal successors, (1793), 13 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:42,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 250.0) internal successors, (3500), 14 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:42,179 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 250.0) internal successors, (3500), 14 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:42,179 INFO L175 Difference]: Start difference. First operand has 225 places, 272 transitions, 777 flow. Second operand 13 states and 1793 transitions. [2023-11-29 01:26:42,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 275 transitions, 1088 flow [2023-11-29 01:26:42,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 275 transitions, 1030 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 01:26:42,188 INFO L231 Difference]: Finished difference. Result has 228 places, 275 transitions, 824 flow [2023-11-29 01:26:42,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=824, PETRI_PLACES=228, PETRI_TRANSITIONS=275} [2023-11-29 01:26:42,189 INFO L281 CegarLoopForPetriNet]: 216 programPoint places, 12 predicate places. [2023-11-29 01:26:42,189 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 275 transitions, 824 flow [2023-11-29 01:26:42,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 127.33333333333333) internal successors, (1910), 15 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:42,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:26:42,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:42,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:26:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da8b711f-4927-4a47-aacc-24f3beacd27c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:26:42,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2023-11-29 01:26:42,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -239745642, now seen corresponding path program 1 times [2023-11-29 01:26:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:26:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524343191] [2023-11-29 01:26:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:26:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:42,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:26:42,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:42,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524343191] [2023-11-29 01:26:42,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524343191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:26:42,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:26:42,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:26:42,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226570884] [2023-11-29 01:26:42,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:26:42,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:26:42,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:42,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:26:42,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:26:42,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 250 [2023-11-29 01:26:42,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 275 transitions, 824 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:26:42,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:26:42,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 250 [2023-11-29 01:26:42,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand