./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:27:31,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:27:31,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:27:31,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:27:31,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:27:31,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:27:31,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:27:31,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:27:31,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:27:31,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:27:31,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:27:31,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:27:31,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:27:31,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:27:31,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:27:31,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:27:31,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:27:31,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:27:31,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:27:31,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:27:31,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:27:31,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:27:31,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:27:31,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:27:31,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:27:31,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:27:31,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:27:31,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:27:31,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:27:31,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:27:31,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:27:31,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:27:31,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:27:31,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:27:31,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:27:31,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:27:31,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:27:31,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:27:31,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:27:31,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:27:31,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:27:31,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:27:31,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:27:31,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:27:31,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:27:31,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:27:31,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:27:31,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:27:31,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:27:31,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:27:31,476 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:27:31,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:27:31,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:27:31,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:27:31,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:27:31,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:27:31,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:27:31,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:27:31,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:27:31,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:27:31,480 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:27:31,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:27:31,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:27:31,481 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:27:31,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:27:31,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:27:31,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:27:31,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:27:31,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:27:31,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:27:31,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:27:31,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:27:31,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:27:31,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:27:31,484 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:27:31,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:27:31,485 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:27:31,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:27:31,486 INFO L138 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_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-25 18:27:31,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:27:31,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:27:31,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:27:31,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:27:31,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:27:31,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-25 18:27:34,931 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:27:35,248 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:27:35,249 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-25 18:27:35,260 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/data/b94996e85/07595ce9eb3c4f81829b36c906a87bfb/FLAG3a39607e8 [2022-11-25 18:27:35,285 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/data/b94996e85/07595ce9eb3c4f81829b36c906a87bfb [2022-11-25 18:27:35,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:27:35,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:27:35,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:27:35,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:27:35,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:27:35,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ee60f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35, skipping insertion in model container [2022-11-25 18:27:35,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:27:35,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:27:35,677 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-25 18:27:35,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:27:35,703 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:27:35,741 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-25 18:27:35,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:27:35,762 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:27:35,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35 WrapperNode [2022-11-25 18:27:35,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:27:35,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:27:35,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:27:35,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:27:35,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,837 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-11-25 18:27:35,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:27:35,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:27:35,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:27:35,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:27:35,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:27:35,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:27:35,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:27:35,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:27:35,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (1/1) ... [2022-11-25 18:27:35,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:27:35,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:35,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:27:36,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:27:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:27:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:27:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:27:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:27:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:27:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:27:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:27:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:27:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:27:36,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:27:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:27:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:27:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:27:36,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:27:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:27:36,048 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:27:36,228 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:27:36,247 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:27:37,575 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:27:37,602 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:27:37,606 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 18:27:37,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:37 BoogieIcfgContainer [2022-11-25 18:27:37,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:27:37,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:27:37,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:27:37,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:27:37,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:27:35" (1/3) ... [2022-11-25 18:27:37,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290ee261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:37, skipping insertion in model container [2022-11-25 18:27:37,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:27:35" (2/3) ... [2022-11-25 18:27:37,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290ee261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:27:37, skipping insertion in model container [2022-11-25 18:27:37,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:27:37" (3/3) ... [2022-11-25 18:27:37,622 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-25 18:27:37,632 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:27:37,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:27:37,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-11-25 18:27:37,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:27:37,877 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:27:37,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-11-25 18:27:38,654 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-11-25 18:27:38,655 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:27:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 967 events. 91/967 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4103 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-11-25 18:27:38,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 889 places, 970 transitions, 1964 flow [2022-11-25 18:27:38,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 866 places, 946 transitions, 1907 flow [2022-11-25 18:27:38,735 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:27:38,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 866 places, 946 transitions, 1907 flow [2022-11-25 18:27:38,768 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 866 places, 946 transitions, 1907 flow [2022-11-25 18:27:38,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 866 places, 946 transitions, 1907 flow [2022-11-25 18:27:39,267 INFO L130 PetriNetUnfolder]: 90/946 cut-off events. [2022-11-25 18:27:39,268 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:27:39,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 946 events. 90/946 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4034 event pairs, 0 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-11-25 18:27:39,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 354078 [2022-11-25 18:28:53,942 INFO L134 LiptonReduction]: Checked pairs total: 351014 [2022-11-25 18:28:53,942 INFO L136 LiptonReduction]: Total number of compositions: 1266 [2022-11-25 18:28:53,960 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:28:53,967 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=LoopsAndPotentialCycles, 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;@5beb89c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:28:53,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-11-25 18:28:53,969 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:28:53,969 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:28:53,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:28:53,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:28:53,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-25 18:28:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:28:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash 137420, now seen corresponding path program 1 times [2022-11-25 18:28:53,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:28:53,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155559640] [2022-11-25 18:28:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:28:53,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:28:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:28:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:28:54,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:28:54,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155559640] [2022-11-25 18:28:54,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155559640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:28:54,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:28:54,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:28:54,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100278106] [2022-11-25 18:28:54,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:28:54,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:28:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:28:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:28:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:28:54,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 917 out of 2236 [2022-11-25 18:28:54,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 917.6666666666666) internal successors, (2753), 3 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:28:54,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:28:54,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 917 of 2236 [2022-11-25 18:28:54,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:29:19,570 INFO L130 PetriNetUnfolder]: 117095/159285 cut-off events. [2022-11-25 18:29:19,571 INFO L131 PetriNetUnfolder]: For 3386/3386 co-relation queries the response was YES. [2022-11-25 18:29:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322143 conditions, 159285 events. 117095/159285 cut-off events. For 3386/3386 co-relation queries the response was YES. Maximal size of possible extension queue 4285. Compared 1034283 event pairs, 97130 based on Foata normal form. 0/63861 useless extension candidates. Maximal degree in co-relation 155856. Up to 79647 conditions per place. [2022-11-25 18:29:20,457 INFO L137 encePairwiseOnDemand]: 2209/2236 looper letters, 181 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-25 18:29:20,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 187 transitions, 778 flow [2022-11-25 18:29:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:29:20,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:29:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2974 transitions. [2022-11-25 18:29:20,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44335122242098984 [2022-11-25 18:29:20,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2974 transitions. [2022-11-25 18:29:20,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2974 transitions. [2022-11-25 18:29:20,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:29:20,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2974 transitions. [2022-11-25 18:29:20,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 991.3333333333334) internal successors, (2974), 3 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:20,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2236.0) internal successors, (8944), 4 states have internal predecessors, (8944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:20,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2236.0) internal successors, (8944), 4 states have internal predecessors, (8944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:20,546 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 239 flow. Second operand 3 states and 2974 transitions. [2022-11-25 18:29:20,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 187 transitions, 778 flow [2022-11-25 18:29:20,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 187 transitions, 760 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 18:29:20,734 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 256 flow [2022-11-25 18:29:20,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2236, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2022-11-25 18:29:20,742 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, -16 predicate places. [2022-11-25 18:29:20,743 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 256 flow [2022-11-25 18:29:20,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 917.6666666666666) internal successors, (2753), 3 states have internal predecessors, (2753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:20,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:29:20,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:29:20,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:29:20,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-11-25 18:29:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:29:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 4266806, now seen corresponding path program 1 times [2022-11-25 18:29:20,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:29:20,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748169766] [2022-11-25 18:29:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:20,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:29:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:20,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:29:20,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748169766] [2022-11-25 18:29:20,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748169766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:29:20,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938830181] [2022-11-25 18:29:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:29:20,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:29:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:29:20,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:29:20,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e35c022-05ba-4e7f-8a3d-cccc5eef1d74/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:29:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:29:21,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:29:21,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:29:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:21,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:29:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:29:21,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938830181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:29:21,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:29:21,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 18:29:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805497899] [2022-11-25 18:29:21,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:29:21,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:29:21,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:29:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:29:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:29:21,378 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 917 out of 2236 [2022-11-25 18:29:21,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 918.1428571428571) internal successors, (6427), 7 states have internal predecessors, (6427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:29:21,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:29:21,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 917 of 2236 [2022-11-25 18:29:21,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand