./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.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_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/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_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/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_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/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 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e --- 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 18:02:45,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:02:45,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:02:45,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:02:45,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:02:45,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:02:45,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:02:45,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:02:45,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:02:45,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:02:45,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:02:45,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:02:45,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:02:45,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:02:45,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:02:45,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:02:45,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:02:45,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:02:45,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:02:45,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:02:45,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:02:45,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:02:45,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:02:45,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:02:45,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:02:45,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:02:45,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:02:45,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:02:45,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:02:45,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:02:45,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:02:45,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:02:45,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:02:45,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:02:45,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:02:45,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:02:45,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:02:45,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:02:45,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:02:45,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:02:45,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:02:45,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:02:45,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:02:45,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:02:45,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:02:45,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:02:45,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:02:45,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:02:45,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:02:45,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:02:45,600 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:02:45,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:02:45,600 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:02:45,601 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:02:45,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:02:45,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:02:45,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:02:45,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:02:45,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:02:45,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:02:45,619 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:02:45,620 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:02:45,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:02:45,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:02:45,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:02:45,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:02:45,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:02:45,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:02:45,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:02:45,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:02:45,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:02:45,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:02:45,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:02:45,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:02:45,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:02:45,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:02:45,624 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:02:45,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:02:45,625 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_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e [2022-11-25 18:02:45,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:02:45,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:02:45,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:02:45,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:02:45,982 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:02:45,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2022-11-25 18:02:48,981 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:02:49,290 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:02:49,290 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2022-11-25 18:02:49,297 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/data/2536ffee0/967494f9677c4a60b425274c37e7f20f/FLAGd552b75e8 [2022-11-25 18:02:49,595 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/data/2536ffee0/967494f9677c4a60b425274c37e7f20f [2022-11-25 18:02:49,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:02:49,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:02:49,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:02:49,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:02:49,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:02:49,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:49,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a21ea67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49, skipping insertion in model container [2022-11-25 18:02:49,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:49,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:02:49,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:02:49,878 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_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2848,2861] [2022-11-25 18:02:49,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:02:49,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:02:49,945 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_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2848,2861] [2022-11-25 18:02:49,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:02:49,982 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:02:49,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49 WrapperNode [2022-11-25 18:02:49,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:02:49,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:02:49,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:02:49,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:02:49,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,057 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 132 [2022-11-25 18:02:50,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:02:50,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:02:50,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:02:50,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:02:50,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:02:50,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:02:50,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:02:50,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:02:50,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (1/1) ... [2022-11-25 18:02:50,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:02:50,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:02:50,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:02:50,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:02:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:02:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:02:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:02:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:02:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:02:50,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:02:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:02:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:02:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:02:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:02:50,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:02:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:02:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:02:50,205 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 18:02:50,375 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:02:50,377 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:02:50,813 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:02:50,825 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:02:50,825 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 18:02:50,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:02:50 BoogieIcfgContainer [2022-11-25 18:02:50,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:02:50,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:02:50,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:02:50,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:02:50,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:02:49" (1/3) ... [2022-11-25 18:02:50,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727201b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:02:50, skipping insertion in model container [2022-11-25 18:02:50,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:02:49" (2/3) ... [2022-11-25 18:02:50,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727201b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:02:50, skipping insertion in model container [2022-11-25 18:02:50,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:02:50" (3/3) ... [2022-11-25 18:02:50,838 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-11-25 18:02:50,848 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:02:50,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:02:50,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-25 18:02:50,861 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:02:50,966 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:02:51,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 249 transitions, 514 flow [2022-11-25 18:02:51,141 INFO L130 PetriNetUnfolder]: 21/247 cut-off events. [2022-11-25 18:02:51,142 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:02:51,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 247 events. 21/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 328 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-11-25 18:02:51,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 249 transitions, 514 flow [2022-11-25 18:02:51,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 212 transitions, 433 flow [2022-11-25 18:02:51,169 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:02:51,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 212 transitions, 433 flow [2022-11-25 18:02:51,227 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 212 transitions, 433 flow [2022-11-25 18:02:51,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 212 transitions, 433 flow [2022-11-25 18:02:51,290 INFO L130 PetriNetUnfolder]: 18/212 cut-off events. [2022-11-25 18:02:51,290 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:02:51,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 212 events. 18/212 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 314 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-11-25 18:02:51,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2022-11-25 18:03:00,412 INFO L134 LiptonReduction]: Checked pairs total: 4791 [2022-11-25 18:03:00,412 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-11-25 18:03:00,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:03:00,437 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;@1a0bcf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:03:00,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 18:03:00,441 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:03:00,441 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:03:00,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:00,442 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:03:00,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:00,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash 29589, now seen corresponding path program 1 times [2022-11-25 18:03:00,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:00,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772931993] [2022-11-25 18:03:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:00,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:00,853 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 18:03:00,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772931993] [2022-11-25 18:03:00,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772931993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:00,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:00,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:03:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763096299] [2022-11-25 18:03:00,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:00,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:00,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:00,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 480 [2022-11-25 18:03:00,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 18:03:00,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:00,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 480 [2022-11-25 18:03:00,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:01,260 INFO L130 PetriNetUnfolder]: 651/1041 cut-off events. [2022-11-25 18:03:01,261 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-25 18:03:01,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 1041 events. 651/1041 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4580 event pairs, 456 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 988. Up to 524 conditions per place. [2022-11-25 18:03:01,277 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 63 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2022-11-25 18:03:01,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 286 flow [2022-11-25 18:03:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2022-11-25 18:03:01,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2022-11-25 18:03:01,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2022-11-25 18:03:01,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2022-11-25 18:03:01,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:01,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2022-11-25 18:03:01,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 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 18:03:01,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:01,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:01,337 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 3 states and 752 transitions. [2022-11-25 18:03:01,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 286 flow [2022-11-25 18:03:01,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 67 transitions, 276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:03:01,346 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 112 flow [2022-11-25 18:03:01,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2022-11-25 18:03:01,353 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-11-25 18:03:01,354 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 112 flow [2022-11-25 18:03:01,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 18:03:01,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:01,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:03:01,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:03:01,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash 918545, now seen corresponding path program 1 times [2022-11-25 18:03:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:01,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573059176] [2022-11-25 18:03:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:01,507 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 18:03:01,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573059176] [2022-11-25 18:03:01,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573059176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457936464] [2022-11-25 18:03:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:01,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:01,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:01,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:01,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:03:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:01,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:03:01,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:01,706 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 18:03:01,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:03:01,723 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 18:03:01,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457936464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:03:01,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:03:01,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 18:03:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111602221] [2022-11-25 18:03:01,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:03:01,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:03:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:03:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:01,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 480 [2022-11-25 18:03:01,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 228.14285714285714) internal successors, (1597), 7 states have internal predecessors, (1597), 0 states have call successors, (0), 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 18:03:01,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:01,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 480 [2022-11-25 18:03:01,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:02,423 INFO L130 PetriNetUnfolder]: 1632/2601 cut-off events. [2022-11-25 18:03:02,423 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-25 18:03:02,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5354 conditions, 2601 events. 1632/2601 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 13655 event pairs, 1140 based on Foata normal form. 0/1311 useless extension candidates. Maximal degree in co-relation 4239. Up to 522 conditions per place. [2022-11-25 18:03:02,440 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 145 selfloop transitions, 21 changer transitions 0/166 dead transitions. [2022-11-25 18:03:02,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 166 transitions, 750 flow [2022-11-25 18:03:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:03:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:03:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1761 transitions. [2022-11-25 18:03:02,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5241071428571429 [2022-11-25 18:03:02,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1761 transitions. [2022-11-25 18:03:02,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1761 transitions. [2022-11-25 18:03:02,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:02,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1761 transitions. [2022-11-25 18:03:02,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 251.57142857142858) internal successors, (1761), 7 states have internal predecessors, (1761), 0 states have call successors, (0), 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 18:03:02,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 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 18:03:02,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 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 18:03:02,463 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 112 flow. Second operand 7 states and 1761 transitions. [2022-11-25 18:03:02,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 166 transitions, 750 flow [2022-11-25 18:03:02,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 166 transitions, 736 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:03:02,469 INFO L231 Difference]: Finished difference. Result has 44 places, 54 transitions, 243 flow [2022-11-25 18:03:02,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=44, PETRI_TRANSITIONS=54} [2022-11-25 18:03:02,473 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-11-25 18:03:02,474 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 54 transitions, 243 flow [2022-11-25 18:03:02,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.14285714285714) internal successors, (1597), 7 states have internal predecessors, (1597), 0 states have call successors, (0), 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 18:03:02,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:02,475 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-11-25 18:03:02,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:02,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:02,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:02,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:02,681 INFO L85 PathProgramCache]: Analyzing trace with hash 28476180, now seen corresponding path program 1 times [2022-11-25 18:03:02,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:02,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804091756] [2022-11-25 18:03:02,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:02,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:02,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804091756] [2022-11-25 18:03:02,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804091756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:02,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630066232] [2022-11-25 18:03:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:02,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:02,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:02,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:02,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:03:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:02,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:03:02,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:02,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:03:02,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630066232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:02,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:03:02,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 18:03:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333699098] [2022-11-25 18:03:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:02,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:03:02,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 480 [2022-11-25 18:03:02,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 227.8) internal successors, (1139), 5 states have internal predecessors, (1139), 0 states have call successors, (0), 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 18:03:02,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:02,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 480 [2022-11-25 18:03:02,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:03,502 INFO L130 PetriNetUnfolder]: 1626/2593 cut-off events. [2022-11-25 18:03:03,503 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-25 18:03:03,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5356 conditions, 2593 events. 1626/2593 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 13647 event pairs, 1140 based on Foata normal form. 2/1313 useless extension candidates. Maximal degree in co-relation 3194. Up to 1555 conditions per place. [2022-11-25 18:03:03,520 INFO L137 encePairwiseOnDemand]: 474/480 looper letters, 93 selfloop transitions, 9 changer transitions 0/102 dead transitions. [2022-11-25 18:03:03,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 102 transitions, 513 flow [2022-11-25 18:03:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:03:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:03:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1235 transitions. [2022-11-25 18:03:03,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5145833333333333 [2022-11-25 18:03:03,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1235 transitions. [2022-11-25 18:03:03,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1235 transitions. [2022-11-25 18:03:03,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:03,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1235 transitions. [2022-11-25 18:03:03,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 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 18:03:03,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 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 18:03:03,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 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 18:03:03,537 INFO L175 Difference]: Start difference. First operand has 44 places, 54 transitions, 243 flow. Second operand 5 states and 1235 transitions. [2022-11-25 18:03:03,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 102 transitions, 513 flow [2022-11-25 18:03:03,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 102 transitions, 494 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:03,543 INFO L231 Difference]: Finished difference. Result has 44 places, 46 transitions, 188 flow [2022-11-25 18:03:03,544 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2022-11-25 18:03:03,546 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-11-25 18:03:03,546 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 188 flow [2022-11-25 18:03:03,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 227.8) internal successors, (1139), 5 states have internal predecessors, (1139), 0 states have call successors, (0), 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 18:03:03,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:03,547 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:03:03,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:03,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:03,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1595847317, now seen corresponding path program 2 times [2022-11-25 18:03:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:03,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283853939] [2022-11-25 18:03:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:03,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:03,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:03,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283853939] [2022-11-25 18:03:03,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283853939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:03,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901530332] [2022-11-25 18:03:03,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:03:03,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:03,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:03,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:03:03,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:03:03,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:03:03,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:03:03,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:04,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:03:04,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:03:04,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901530332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:04,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:03:04,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 18:03:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059002985] [2022-11-25 18:03:04,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:04,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:04,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:03:04,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 480 [2022-11-25 18:03:04,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 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 18:03:04,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:04,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 480 [2022-11-25 18:03:04,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:04,416 INFO L130 PetriNetUnfolder]: 1626/2592 cut-off events. [2022-11-25 18:03:04,416 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-25 18:03:04,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5349 conditions, 2592 events. 1626/2592 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 13629 event pairs, 1140 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 4225. Up to 2587 conditions per place. [2022-11-25 18:03:04,433 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 39 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2022-11-25 18:03:04,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 268 flow [2022-11-25 18:03:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-11-25 18:03:04,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5006944444444444 [2022-11-25 18:03:04,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-11-25 18:03:04,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-11-25 18:03:04,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:04,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-11-25 18:03:04,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 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 18:03:04,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:04,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:04,444 INFO L175 Difference]: Start difference. First operand has 44 places, 46 transitions, 188 flow. Second operand 3 states and 721 transitions. [2022-11-25 18:03:04,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 268 flow [2022-11-25 18:03:04,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 255 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:03:04,447 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 177 flow [2022-11-25 18:03:04,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2022-11-25 18:03:04,448 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2022-11-25 18:03:04,448 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 177 flow [2022-11-25 18:03:04,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 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 18:03:04,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:04,449 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-11-25 18:03:04,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:04,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:04,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1247637122, now seen corresponding path program 1 times [2022-11-25 18:03:04,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:04,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053476370] [2022-11-25 18:03:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:04,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:04,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:04,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053476370] [2022-11-25 18:03:04,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053476370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:04,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303874561] [2022-11-25 18:03:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:04,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:04,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:04,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:04,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:03:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:04,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:03:04,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:04,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:03:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:04,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303874561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:03:04,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:03:04,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 18:03:04,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634871519] [2022-11-25 18:03:04,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:03:04,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 18:03:04,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:04,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 18:03:04,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:03:05,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 480 [2022-11-25 18:03:05,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 177 flow. Second operand has 13 states, 13 states have (on average 228.15384615384616) internal successors, (2966), 13 states have internal predecessors, (2966), 0 states have call successors, (0), 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 18:03:05,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:05,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 480 [2022-11-25 18:03:05,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:06,265 INFO L130 PetriNetUnfolder]: 3576/5700 cut-off events. [2022-11-25 18:03:06,266 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-11-25 18:03:06,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11738 conditions, 5700 events. 3576/5700 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32390 event pairs, 2508 based on Foata normal form. 6/2890 useless extension candidates. Maximal degree in co-relation 11634. Up to 847 conditions per place. [2022-11-25 18:03:06,311 INFO L137 encePairwiseOnDemand]: 475/480 looper letters, 312 selfloop transitions, 31 changer transitions 0/343 dead transitions. [2022-11-25 18:03:06,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 343 transitions, 1583 flow [2022-11-25 18:03:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:03:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 18:03:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3073 transitions. [2022-11-25 18:03:06,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5335069444444445 [2022-11-25 18:03:06,320 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3073 transitions. [2022-11-25 18:03:06,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3073 transitions. [2022-11-25 18:03:06,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:06,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3073 transitions. [2022-11-25 18:03:06,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 256.0833333333333) internal successors, (3073), 12 states have internal predecessors, (3073), 0 states have call successors, (0), 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 18:03:06,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 480.0) internal successors, (6240), 13 states have internal predecessors, (6240), 0 states have call successors, (0), 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 18:03:06,345 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 480.0) internal successors, (6240), 13 states have internal predecessors, (6240), 0 states have call successors, (0), 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 18:03:06,345 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 177 flow. Second operand 12 states and 3073 transitions. [2022-11-25 18:03:06,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 343 transitions, 1583 flow [2022-11-25 18:03:06,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 343 transitions, 1559 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:03:06,354 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 381 flow [2022-11-25 18:03:06,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2022-11-25 18:03:06,357 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2022-11-25 18:03:06,357 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 381 flow [2022-11-25 18:03:06,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 228.15384615384616) internal successors, (2966), 13 states have internal predecessors, (2966), 0 states have call successors, (0), 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 18:03:06,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:06,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:06,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:06,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:06,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:06,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1267352544, now seen corresponding path program 1 times [2022-11-25 18:03:06,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:06,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565289644] [2022-11-25 18:03:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:06,614 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 18:03:06,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:06,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565289644] [2022-11-25 18:03:06,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565289644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:06,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:06,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:06,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460199361] [2022-11-25 18:03:06,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:06,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:06,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:06,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 480 [2022-11-25 18:03:06,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 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 18:03:06,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:06,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 480 [2022-11-25 18:03:06,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:07,917 INFO L130 PetriNetUnfolder]: 6128/9814 cut-off events. [2022-11-25 18:03:07,918 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-11-25 18:03:07,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20193 conditions, 9814 events. 6128/9814 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 63576 event pairs, 2508 based on Foata normal form. 0/5106 useless extension candidates. Maximal degree in co-relation 16490. Up to 5701 conditions per place. [2022-11-25 18:03:07,997 INFO L137 encePairwiseOnDemand]: 476/480 looper letters, 83 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2022-11-25 18:03:07,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 85 transitions, 598 flow [2022-11-25 18:03:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 750 transitions. [2022-11-25 18:03:08,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2022-11-25 18:03:08,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 750 transitions. [2022-11-25 18:03:08,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 750 transitions. [2022-11-25 18:03:08,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:08,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 750 transitions. [2022-11-25 18:03:08,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 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 18:03:08,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:08,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:08,011 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 381 flow. Second operand 3 states and 750 transitions. [2022-11-25 18:03:08,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 85 transitions, 598 flow [2022-11-25 18:03:08,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 508 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-25 18:03:08,017 INFO L231 Difference]: Finished difference. Result has 55 places, 64 transitions, 305 flow [2022-11-25 18:03:08,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=55, PETRI_TRANSITIONS=64} [2022-11-25 18:03:08,019 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-11-25 18:03:08,020 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 64 transitions, 305 flow [2022-11-25 18:03:08,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 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 18:03:08,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:08,021 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:08,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:03:08,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1267352065, now seen corresponding path program 1 times [2022-11-25 18:03:08,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:08,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589246017] [2022-11-25 18:03:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:08,126 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 18:03:08,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:08,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589246017] [2022-11-25 18:03:08,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589246017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:08,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:08,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491655507] [2022-11-25 18:03:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:03:08,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 480 [2022-11-25 18:03:08,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 64 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 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 18:03:08,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:08,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 480 [2022-11-25 18:03:08,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:10,643 INFO L130 PetriNetUnfolder]: 10525/16496 cut-off events. [2022-11-25 18:03:10,643 INFO L131 PetriNetUnfolder]: For 1698/1698 co-relation queries the response was YES. [2022-11-25 18:03:10,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35751 conditions, 16496 events. 10525/16496 cut-off events. For 1698/1698 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 107272 event pairs, 6886 based on Foata normal form. 0/9710 useless extension candidates. Maximal degree in co-relation 29249. Up to 7965 conditions per place. [2022-11-25 18:03:10,788 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 124 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2022-11-25 18:03:10,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 130 transitions, 793 flow [2022-11-25 18:03:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:03:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:03:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1189 transitions. [2022-11-25 18:03:10,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49541666666666667 [2022-11-25 18:03:10,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1189 transitions. [2022-11-25 18:03:10,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1189 transitions. [2022-11-25 18:03:10,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:10,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1189 transitions. [2022-11-25 18:03:10,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.8) internal successors, (1189), 5 states have internal predecessors, (1189), 0 states have call successors, (0), 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 18:03:10,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 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 18:03:10,805 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 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 18:03:10,805 INFO L175 Difference]: Start difference. First operand has 55 places, 64 transitions, 305 flow. Second operand 5 states and 1189 transitions. [2022-11-25 18:03:10,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 130 transitions, 793 flow [2022-11-25 18:03:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 130 transitions, 787 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:10,817 INFO L231 Difference]: Finished difference. Result has 61 places, 67 transitions, 348 flow [2022-11-25 18:03:10,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=61, PETRI_TRANSITIONS=67} [2022-11-25 18:03:10,819 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2022-11-25 18:03:10,820 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 348 flow [2022-11-25 18:03:10,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 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 18:03:10,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:10,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:10,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:03:10,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:10,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:10,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1267352172, now seen corresponding path program 1 times [2022-11-25 18:03:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:10,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508181731] [2022-11-25 18:03:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:10,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:11,093 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 18:03:11,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:11,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508181731] [2022-11-25 18:03:11,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508181731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:11,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:11,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:03:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361480334] [2022-11-25 18:03:11,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:11,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:03:11,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 480 [2022-11-25 18:03:11,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 67 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 218.4) internal successors, (1092), 5 states have internal predecessors, (1092), 0 states have call successors, (0), 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 18:03:11,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:11,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 480 [2022-11-25 18:03:11,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:13,236 INFO L130 PetriNetUnfolder]: 10283/16042 cut-off events. [2022-11-25 18:03:13,236 INFO L131 PetriNetUnfolder]: For 4154/4154 co-relation queries the response was YES. [2022-11-25 18:03:13,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37786 conditions, 16042 events. 10283/16042 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 103221 event pairs, 5973 based on Foata normal form. 204/11694 useless extension candidates. Maximal degree in co-relation 30758. Up to 13166 conditions per place. [2022-11-25 18:03:13,356 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 102 selfloop transitions, 17 changer transitions 0/119 dead transitions. [2022-11-25 18:03:13,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 733 flow [2022-11-25 18:03:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:03:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:03:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1390 transitions. [2022-11-25 18:03:13,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2022-11-25 18:03:13,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1390 transitions. [2022-11-25 18:03:13,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1390 transitions. [2022-11-25 18:03:13,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:13,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1390 transitions. [2022-11-25 18:03:13,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 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 18:03:13,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 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 18:03:13,375 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 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 18:03:13,375 INFO L175 Difference]: Start difference. First operand has 61 places, 67 transitions, 348 flow. Second operand 6 states and 1390 transitions. [2022-11-25 18:03:13,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 733 flow [2022-11-25 18:03:13,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 729 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-25 18:03:13,391 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 443 flow [2022-11-25 18:03:13,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2022-11-25 18:03:13,392 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-11-25 18:03:13,392 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 443 flow [2022-11-25 18:03:13,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.4) internal successors, (1092), 5 states have internal predecessors, (1092), 0 states have call successors, (0), 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 18:03:13,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:13,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:13,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:03:13,394 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1106975491, now seen corresponding path program 1 times [2022-11-25 18:03:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:13,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813816380] [2022-11-25 18:03:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:13,500 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 18:03:13,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813816380] [2022-11-25 18:03:13,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813816380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:13,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9886980] [2022-11-25 18:03:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:13,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:13,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:13,503 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:13,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:03:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:13,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:03:13,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:13,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:03:13,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9886980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:13,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:03:13,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-25 18:03:13,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375158395] [2022-11-25 18:03:13,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:13,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:13,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:13,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 480 [2022-11-25 18:03:13,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 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 18:03:13,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:13,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 480 [2022-11-25 18:03:13,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:15,115 INFO L130 PetriNetUnfolder]: 7884/12173 cut-off events. [2022-11-25 18:03:15,116 INFO L131 PetriNetUnfolder]: For 10834/10834 co-relation queries the response was YES. [2022-11-25 18:03:15,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29856 conditions, 12173 events. 7884/12173 cut-off events. For 10834/10834 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 73334 event pairs, 4796 based on Foata normal form. 594/9443 useless extension candidates. Maximal degree in co-relation 26594. Up to 12161 conditions per place. [2022-11-25 18:03:15,334 INFO L137 encePairwiseOnDemand]: 475/480 looper letters, 53 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2022-11-25 18:03:15,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 535 flow [2022-11-25 18:03:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:03:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:03:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 941 transitions. [2022-11-25 18:03:15,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4901041666666667 [2022-11-25 18:03:15,339 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 941 transitions. [2022-11-25 18:03:15,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 941 transitions. [2022-11-25 18:03:15,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:15,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 941 transitions. [2022-11-25 18:03:15,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.25) internal successors, (941), 4 states have internal predecessors, (941), 0 states have call successors, (0), 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 18:03:15,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 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 18:03:15,347 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 480.0) internal successors, (2400), 5 states have internal predecessors, (2400), 0 states have call successors, (0), 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 18:03:15,347 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 443 flow. Second operand 4 states and 941 transitions. [2022-11-25 18:03:15,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 535 flow [2022-11-25 18:03:15,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 481 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-25 18:03:15,356 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 375 flow [2022-11-25 18:03:15,357 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=375, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2022-11-25 18:03:15,358 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2022-11-25 18:03:15,358 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 375 flow [2022-11-25 18:03:15,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 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 18:03:15,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:15,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:15,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:15,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:15,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 547951672, now seen corresponding path program 1 times [2022-11-25 18:03:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:15,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401359849] [2022-11-25 18:03:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:15,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:15,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401359849] [2022-11-25 18:03:15,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401359849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:15,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624726115] [2022-11-25 18:03:15,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:15,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:15,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:15,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:15,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:03:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:15,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:03:15,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:15,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:03:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:15,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624726115] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:15,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:03:15,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 2] total 9 [2022-11-25 18:03:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119308135] [2022-11-25 18:03:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:03:16,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 480 [2022-11-25 18:03:16,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 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 18:03:16,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:16,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 480 [2022-11-25 18:03:16,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:17,115 INFO L130 PetriNetUnfolder]: 7304/11353 cut-off events. [2022-11-25 18:03:17,115 INFO L131 PetriNetUnfolder]: For 3030/3030 co-relation queries the response was YES. [2022-11-25 18:03:17,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26458 conditions, 11353 events. 7304/11353 cut-off events. For 3030/3030 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 68254 event pairs, 4496 based on Foata normal form. 440/8589 useless extension candidates. Maximal degree in co-relation 21526. Up to 11353 conditions per place. [2022-11-25 18:03:17,177 INFO L137 encePairwiseOnDemand]: 478/480 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-11-25 18:03:17,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 488 flow [2022-11-25 18:03:17,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2022-11-25 18:03:17,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4625 [2022-11-25 18:03:17,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2022-11-25 18:03:17,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2022-11-25 18:03:17,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:17,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2022-11-25 18:03:17,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 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 18:03:17,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:17,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:17,186 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 375 flow. Second operand 3 states and 666 transitions. [2022-11-25 18:03:17,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 488 flow [2022-11-25 18:03:17,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:03:17,194 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 351 flow [2022-11-25 18:03:17,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2022-11-25 18:03:17,194 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-11-25 18:03:17,195 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 351 flow [2022-11-25 18:03:17,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.25) internal successors, (857), 4 states have internal predecessors, (857), 0 states have call successors, (0), 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 18:03:17,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:17,195 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:17,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:03:17,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:17,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash -631694737, now seen corresponding path program 1 times [2022-11-25 18:03:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:17,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186832631] [2022-11-25 18:03:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:17,448 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 18:03:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186832631] [2022-11-25 18:03:17,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186832631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:17,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:17,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084912413] [2022-11-25 18:03:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:17,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 480 [2022-11-25 18:03:17,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 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 18:03:17,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:17,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 480 [2022-11-25 18:03:17,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:19,393 INFO L130 PetriNetUnfolder]: 10614/16499 cut-off events. [2022-11-25 18:03:19,393 INFO L131 PetriNetUnfolder]: For 3114/3114 co-relation queries the response was YES. [2022-11-25 18:03:19,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38990 conditions, 16499 events. 10614/16499 cut-off events. For 3114/3114 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 106072 event pairs, 4496 based on Foata normal form. 0/12115 useless extension candidates. Maximal degree in co-relation 38966. Up to 11354 conditions per place. [2022-11-25 18:03:19,522 INFO L137 encePairwiseOnDemand]: 477/480 looper letters, 80 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2022-11-25 18:03:19,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 82 transitions, 573 flow [2022-11-25 18:03:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2022-11-25 18:03:19,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2022-11-25 18:03:19,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2022-11-25 18:03:19,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2022-11-25 18:03:19,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:19,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2022-11-25 18:03:19,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 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 18:03:19,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:19,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:19,533 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 351 flow. Second operand 3 states and 740 transitions. [2022-11-25 18:03:19,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 82 transitions, 573 flow [2022-11-25 18:03:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:19,579 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 362 flow [2022-11-25 18:03:19,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2022-11-25 18:03:19,580 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2022-11-25 18:03:19,580 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 362 flow [2022-11-25 18:03:19,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 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 18:03:19,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:19,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:19,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:03:19,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:19,582 INFO L85 PathProgramCache]: Analyzing trace with hash -191850407, now seen corresponding path program 1 times [2022-11-25 18:03:19,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:19,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419618418] [2022-11-25 18:03:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:19,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:19,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:19,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419618418] [2022-11-25 18:03:19,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419618418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:19,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455068789] [2022-11-25 18:03:19,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:19,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:19,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:19,745 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:19,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:03:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:19,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:03:19,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:19,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:03:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:19,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455068789] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:19,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:03:19,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2022-11-25 18:03:19,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284689706] [2022-11-25 18:03:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:19,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:03:20,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 480 [2022-11-25 18:03:20,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 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 18:03:20,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:20,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 480 [2022-11-25 18:03:20,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:22,418 INFO L130 PetriNetUnfolder]: 10484/16709 cut-off events. [2022-11-25 18:03:22,418 INFO L131 PetriNetUnfolder]: For 5730/5730 co-relation queries the response was YES. [2022-11-25 18:03:22,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42231 conditions, 16709 events. 10484/16709 cut-off events. For 5730/5730 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 112005 event pairs, 5436 based on Foata normal form. 340/14829 useless extension candidates. Maximal degree in co-relation 42206. Up to 7798 conditions per place. [2022-11-25 18:03:22,551 INFO L137 encePairwiseOnDemand]: 472/480 looper letters, 123 selfloop transitions, 9 changer transitions 0/132 dead transitions. [2022-11-25 18:03:22,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 132 transitions, 874 flow [2022-11-25 18:03:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:03:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:03:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2022-11-25 18:03:22,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2022-11-25 18:03:22,556 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2022-11-25 18:03:22,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2022-11-25 18:03:22,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:22,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2022-11-25 18:03:22,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 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 18:03:22,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 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 18:03:22,566 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 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 18:03:22,566 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 362 flow. Second operand 6 states and 1384 transitions. [2022-11-25 18:03:22,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 132 transitions, 874 flow [2022-11-25 18:03:22,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 132 transitions, 870 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:22,631 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 421 flow [2022-11-25 18:03:22,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2022-11-25 18:03:22,631 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2022-11-25 18:03:22,632 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 421 flow [2022-11-25 18:03:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 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 18:03:22,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:22,633 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:22,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:22,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 18:03:22,843 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:22,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1844955671, now seen corresponding path program 1 times [2022-11-25 18:03:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:22,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679988256] [2022-11-25 18:03:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:22,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679988256] [2022-11-25 18:03:22,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679988256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:22,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:22,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805442790] [2022-11-25 18:03:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:22,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 480 [2022-11-25 18:03:22,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 18:03:22,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:22,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 480 [2022-11-25 18:03:22,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:24,480 INFO L130 PetriNetUnfolder]: 10484/17033 cut-off events. [2022-11-25 18:03:24,480 INFO L131 PetriNetUnfolder]: For 15064/15064 co-relation queries the response was YES. [2022-11-25 18:03:24,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46042 conditions, 17033 events. 10484/17033 cut-off events. For 15064/15064 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 124636 event pairs, 906 based on Foata normal form. 0/15929 useless extension candidates. Maximal degree in co-relation 46013. Up to 14734 conditions per place. [2022-11-25 18:03:24,604 INFO L137 encePairwiseOnDemand]: 478/480 looper letters, 83 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2022-11-25 18:03:24,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 84 transitions, 663 flow [2022-11-25 18:03:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2022-11-25 18:03:24,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5090277777777777 [2022-11-25 18:03:24,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2022-11-25 18:03:24,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2022-11-25 18:03:24,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:24,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2022-11-25 18:03:24,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 0 states have call successors, (0), 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 18:03:24,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:24,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:24,613 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 421 flow. Second operand 3 states and 733 transitions. [2022-11-25 18:03:24,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 84 transitions, 663 flow [2022-11-25 18:03:24,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:03:24,655 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 419 flow [2022-11-25 18:03:24,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2022-11-25 18:03:24,659 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2022-11-25 18:03:24,659 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 419 flow [2022-11-25 18:03:24,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 18:03:24,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:24,660 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:24,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:03:24,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:24,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1844955670, now seen corresponding path program 1 times [2022-11-25 18:03:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:24,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867736147] [2022-11-25 18:03:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:24,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:24,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867736147] [2022-11-25 18:03:24,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867736147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:24,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:24,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:03:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802064678] [2022-11-25 18:03:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:24,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:24,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:03:24,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 480 [2022-11-25 18:03:24,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 419 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 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 18:03:24,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:24,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 480 [2022-11-25 18:03:24,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:26,113 INFO L130 PetriNetUnfolder]: 6688/11125 cut-off events. [2022-11-25 18:03:26,113 INFO L131 PetriNetUnfolder]: For 7994/7994 co-relation queries the response was YES. [2022-11-25 18:03:26,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31219 conditions, 11125 events. 6688/11125 cut-off events. For 7994/7994 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 75024 event pairs, 4130 based on Foata normal form. 0/10603 useless extension candidates. Maximal degree in co-relation 31189. Up to 8072 conditions per place. [2022-11-25 18:03:26,192 INFO L137 encePairwiseOnDemand]: 474/480 looper letters, 117 selfloop transitions, 6 changer transitions 8/131 dead transitions. [2022-11-25 18:03:26,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 937 flow [2022-11-25 18:03:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:03:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:03:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1629 transitions. [2022-11-25 18:03:26,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48482142857142857 [2022-11-25 18:03:26,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1629 transitions. [2022-11-25 18:03:26,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1629 transitions. [2022-11-25 18:03:26,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:26,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1629 transitions. [2022-11-25 18:03:26,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 232.71428571428572) internal successors, (1629), 7 states have internal predecessors, (1629), 0 states have call successors, (0), 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 18:03:26,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 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 18:03:26,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 480.0) internal successors, (3840), 8 states have internal predecessors, (3840), 0 states have call successors, (0), 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 18:03:26,209 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 419 flow. Second operand 7 states and 1629 transitions. [2022-11-25 18:03:26,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 937 flow [2022-11-25 18:03:26,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 131 transitions, 934 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:03:26,257 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 448 flow [2022-11-25 18:03:26,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2022-11-25 18:03:26,258 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2022-11-25 18:03:26,258 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 448 flow [2022-11-25 18:03:26,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 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 18:03:26,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:26,259 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:26,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:03:26,259 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1892300540, now seen corresponding path program 1 times [2022-11-25 18:03:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:26,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679161795] [2022-11-25 18:03:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:26,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:26,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679161795] [2022-11-25 18:03:26,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679161795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:26,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:26,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:03:26,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933221979] [2022-11-25 18:03:26,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:26,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:26,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:26,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:26,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:03:26,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 480 [2022-11-25 18:03:26,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 18:03:26,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:26,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 480 [2022-11-25 18:03:26,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:27,408 INFO L130 PetriNetUnfolder]: 6138/10575 cut-off events. [2022-11-25 18:03:27,408 INFO L131 PetriNetUnfolder]: For 6464/6464 co-relation queries the response was YES. [2022-11-25 18:03:27,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29693 conditions, 10575 events. 6138/10575 cut-off events. For 6464/6464 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 75433 event pairs, 1320 based on Foata normal form. 550/10951 useless extension candidates. Maximal degree in co-relation 29660. Up to 7448 conditions per place. [2022-11-25 18:03:27,475 INFO L137 encePairwiseOnDemand]: 478/480 looper letters, 79 selfloop transitions, 2 changer transitions 3/84 dead transitions. [2022-11-25 18:03:27,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 662 flow [2022-11-25 18:03:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2022-11-25 18:03:27,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5097222222222222 [2022-11-25 18:03:27,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2022-11-25 18:03:27,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2022-11-25 18:03:27,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:27,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2022-11-25 18:03:27,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 0 states have call successors, (0), 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 18:03:27,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:27,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:27,485 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 448 flow. Second operand 3 states and 734 transitions. [2022-11-25 18:03:27,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 662 flow [2022-11-25 18:03:27,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 652 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:03:27,530 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 412 flow [2022-11-25 18:03:27,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2022-11-25 18:03:27,531 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2022-11-25 18:03:27,531 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 412 flow [2022-11-25 18:03:27,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 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 18:03:27,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:27,532 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:27,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:03:27,532 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1292997547, now seen corresponding path program 1 times [2022-11-25 18:03:27,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:27,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348003517] [2022-11-25 18:03:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:27,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,622 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 18:03:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348003517] [2022-11-25 18:03:27,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348003517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:27,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954295772] [2022-11-25 18:03:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:27,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:27,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:27,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:03:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:27,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:03:27,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:27,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:03:27,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954295772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:27,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:03:27,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-25 18:03:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630675123] [2022-11-25 18:03:27,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:27,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:03:27,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:03:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:03:27,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 480 [2022-11-25 18:03:27,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 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 18:03:27,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:27,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 480 [2022-11-25 18:03:27,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:28,915 INFO L130 PetriNetUnfolder]: 5137/8839 cut-off events. [2022-11-25 18:03:28,915 INFO L131 PetriNetUnfolder]: For 10431/10431 co-relation queries the response was YES. [2022-11-25 18:03:28,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24298 conditions, 8839 events. 5137/8839 cut-off events. For 10431/10431 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 59717 event pairs, 4127 based on Foata normal form. 640/9325 useless extension candidates. Maximal degree in co-relation 24266. Up to 8839 conditions per place. [2022-11-25 18:03:28,971 INFO L137 encePairwiseOnDemand]: 478/480 looper letters, 51 selfloop transitions, 1 changer transitions 12/64 dead transitions. [2022-11-25 18:03:28,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 525 flow [2022-11-25 18:03:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-25 18:03:28,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2022-11-25 18:03:28,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-25 18:03:28,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-25 18:03:28,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:28,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-25 18:03:28,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 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 18:03:28,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:28,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:28,980 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 412 flow. Second operand 3 states and 714 transitions. [2022-11-25 18:03:28,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 525 flow [2022-11-25 18:03:29,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 64 transitions, 516 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-25 18:03:29,015 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 346 flow [2022-11-25 18:03:29,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2022-11-25 18:03:29,016 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2022-11-25 18:03:29,016 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 346 flow [2022-11-25 18:03:29,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 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 18:03:29,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:29,017 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:29,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:29,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:03:29,222 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1348864486, now seen corresponding path program 1 times [2022-11-25 18:03:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:29,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141507245] [2022-11-25 18:03:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:29,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:03:29,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:29,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141507245] [2022-11-25 18:03:29,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141507245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:29,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:03:29,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:03:29,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977059425] [2022-11-25 18:03:29,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:29,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:03:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:03:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:03:29,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 480 [2022-11-25 18:03:29,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 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 18:03:29,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:29,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 480 [2022-11-25 18:03:29,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:29,823 INFO L130 PetriNetUnfolder]: 1249/2163 cut-off events. [2022-11-25 18:03:29,823 INFO L131 PetriNetUnfolder]: For 1978/1978 co-relation queries the response was YES. [2022-11-25 18:03:29,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6792 conditions, 2163 events. 1249/2163 cut-off events. For 1978/1978 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11187 event pairs, 955 based on Foata normal form. 14/2037 useless extension candidates. Maximal degree in co-relation 6763. Up to 2097 conditions per place. [2022-11-25 18:03:29,833 INFO L137 encePairwiseOnDemand]: 475/480 looper letters, 38 selfloop transitions, 13 changer transitions 19/70 dead transitions. [2022-11-25 18:03:29,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 562 flow [2022-11-25 18:03:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:03:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:03:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2022-11-25 18:03:29,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47375 [2022-11-25 18:03:29,837 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2022-11-25 18:03:29,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2022-11-25 18:03:29,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:29,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2022-11-25 18:03:29,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 0 states have call successors, (0), 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 18:03:29,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 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 18:03:29,845 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 480.0) internal successors, (2880), 6 states have internal predecessors, (2880), 0 states have call successors, (0), 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 18:03:29,846 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 346 flow. Second operand 5 states and 1137 transitions. [2022-11-25 18:03:29,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 562 flow [2022-11-25 18:03:29,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 525 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-25 18:03:29,855 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 350 flow [2022-11-25 18:03:29,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2022-11-25 18:03:29,856 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-11-25 18:03:29,856 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 350 flow [2022-11-25 18:03:29,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 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 18:03:29,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:29,857 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:29,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:03:29,857 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:29,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1699739718, now seen corresponding path program 1 times [2022-11-25 18:03:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:29,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500790682] [2022-11-25 18:03:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:29,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500790682] [2022-11-25 18:03:29,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500790682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:29,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952806824] [2022-11-25 18:03:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:29,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:29,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:29,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:29,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:03:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:30,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:03:30,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:30,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:03:30,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:03:30,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952806824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:03:30,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:03:30,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2022-11-25 18:03:30,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321527974] [2022-11-25 18:03:30,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:03:30,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 18:03:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:30,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 18:03:30,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:03:31,344 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 480 [2022-11-25 18:03:31,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 350 flow. Second operand has 16 states, 16 states have (on average 211.75) internal successors, (3388), 16 states have internal predecessors, (3388), 0 states have call successors, (0), 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 18:03:31,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:31,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 480 [2022-11-25 18:03:31,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:32,143 INFO L130 PetriNetUnfolder]: 1838/3277 cut-off events. [2022-11-25 18:03:32,143 INFO L131 PetriNetUnfolder]: For 1795/1795 co-relation queries the response was YES. [2022-11-25 18:03:32,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9568 conditions, 3277 events. 1838/3277 cut-off events. For 1795/1795 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19930 event pairs, 910 based on Foata normal form. 154/3305 useless extension candidates. Maximal degree in co-relation 9542. Up to 1875 conditions per place. [2022-11-25 18:03:32,160 INFO L137 encePairwiseOnDemand]: 471/480 looper letters, 43 selfloop transitions, 20 changer transitions 87/150 dead transitions. [2022-11-25 18:03:32,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 150 transitions, 1038 flow [2022-11-25 18:03:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 18:03:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-25 18:03:32,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4100 transitions. [2022-11-25 18:03:32,169 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44956140350877194 [2022-11-25 18:03:32,169 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4100 transitions. [2022-11-25 18:03:32,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4100 transitions. [2022-11-25 18:03:32,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:32,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4100 transitions. [2022-11-25 18:03:32,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 215.78947368421052) internal successors, (4100), 19 states have internal predecessors, (4100), 0 states have call successors, (0), 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 18:03:32,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 480.0) internal successors, (9600), 20 states have internal predecessors, (9600), 0 states have call successors, (0), 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 18:03:32,193 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 480.0) internal successors, (9600), 20 states have internal predecessors, (9600), 0 states have call successors, (0), 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 18:03:32,193 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 350 flow. Second operand 19 states and 4100 transitions. [2022-11-25 18:03:32,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 150 transitions, 1038 flow [2022-11-25 18:03:32,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 150 transitions, 994 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-25 18:03:32,216 INFO L231 Difference]: Finished difference. Result has 85 places, 54 transitions, 439 flow [2022-11-25 18:03:32,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=439, PETRI_PLACES=85, PETRI_TRANSITIONS=54} [2022-11-25 18:03:32,217 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2022-11-25 18:03:32,217 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 54 transitions, 439 flow [2022-11-25 18:03:32,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 211.75) internal successors, (3388), 16 states have internal predecessors, (3388), 0 states have call successors, (0), 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 18:03:32,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:32,219 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-11-25 18:03:32,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-25 18:03:32,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:03:32,424 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash 701104254, now seen corresponding path program 2 times [2022-11-25 18:03:32,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:32,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825170018] [2022-11-25 18:03:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:03:32,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:32,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825170018] [2022-11-25 18:03:32,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825170018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:32,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259666659] [2022-11-25 18:03:32,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:03:32,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:32,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:32,643 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:32,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:03:32,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:03:32,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:03:32,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:03:32,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 18:03:32,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:03:32,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259666659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:03:32,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:03:32,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-11-25 18:03:32,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761895187] [2022-11-25 18:03:32,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:03:32,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:03:32,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:03:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:03:32,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 480 [2022-11-25 18:03:32,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 54 transitions, 439 flow. Second operand has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 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 18:03:32,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:32,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 480 [2022-11-25 18:03:32,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:33,178 INFO L130 PetriNetUnfolder]: 1164/2108 cut-off events. [2022-11-25 18:03:33,179 INFO L131 PetriNetUnfolder]: For 3815/3815 co-relation queries the response was YES. [2022-11-25 18:03:33,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 2108 events. 1164/2108 cut-off events. For 3815/3815 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11416 event pairs, 900 based on Foata normal form. 3/1985 useless extension candidates. Maximal degree in co-relation 7235. Up to 2108 conditions per place. [2022-11-25 18:03:33,190 INFO L137 encePairwiseOnDemand]: 478/480 looper letters, 46 selfloop transitions, 1 changer transitions 5/52 dead transitions. [2022-11-25 18:03:33,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 52 transitions, 494 flow [2022-11-25 18:03:33,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:03:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:03:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-11-25 18:03:33,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48541666666666666 [2022-11-25 18:03:33,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-11-25 18:03:33,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-11-25 18:03:33,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:33,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-11-25 18:03:33,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 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 18:03:33,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:33,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 480.0) internal successors, (1920), 4 states have internal predecessors, (1920), 0 states have call successors, (0), 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 18:03:33,196 INFO L175 Difference]: Start difference. First operand has 85 places, 54 transitions, 439 flow. Second operand 3 states and 699 transitions. [2022-11-25 18:03:33,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 52 transitions, 494 flow [2022-11-25 18:03:33,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 359 flow, removed 15 selfloop flow, removed 24 redundant places. [2022-11-25 18:03:33,240 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 228 flow [2022-11-25 18:03:33,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2022-11-25 18:03:33,241 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-11-25 18:03:33,241 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 228 flow [2022-11-25 18:03:33,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 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 18:03:33,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:03:33,241 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:33,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:33,447 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-25 18:03:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:03:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash -377729130, now seen corresponding path program 2 times [2022-11-25 18:03:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:03:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237407529] [2022-11-25 18:03:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:03:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:03:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:03:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:03:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:03:33,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237407529] [2022-11-25 18:03:33,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237407529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:03:33,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53668342] [2022-11-25 18:03:33,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:03:33,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:33,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:03:33,527 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:03:33,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:03:33,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:03:33,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:03:33,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:03:33,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:03:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:03:33,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:03:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:03:33,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53668342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:03:33,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:03:33,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-11-25 18:03:33,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398182382] [2022-11-25 18:03:33,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:03:33,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:03:33,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:03:33,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:03:33,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:03:33,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 480 [2022-11-25 18:03:33,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 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 18:03:33,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:03:33,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 480 [2022-11-25 18:03:33,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:03:34,082 INFO L130 PetriNetUnfolder]: 1459/2498 cut-off events. [2022-11-25 18:03:34,083 INFO L131 PetriNetUnfolder]: For 799/799 co-relation queries the response was YES. [2022-11-25 18:03:34,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 2498 events. 1459/2498 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 14152 event pairs, 207 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 6557. Up to 738 conditions per place. [2022-11-25 18:03:34,089 INFO L137 encePairwiseOnDemand]: 475/480 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2022-11-25 18:03:34,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 457 flow [2022-11-25 18:03:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:03:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:03:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1412 transitions. [2022-11-25 18:03:34,092 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49027777777777776 [2022-11-25 18:03:34,092 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1412 transitions. [2022-11-25 18:03:34,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1412 transitions. [2022-11-25 18:03:34,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:03:34,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1412 transitions. [2022-11-25 18:03:34,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.33333333333334) internal successors, (1412), 6 states have internal predecessors, (1412), 0 states have call successors, (0), 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 18:03:34,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 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 18:03:34,097 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 480.0) internal successors, (3360), 7 states have internal predecessors, (3360), 0 states have call successors, (0), 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 18:03:34,097 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 228 flow. Second operand 6 states and 1412 transitions. [2022-11-25 18:03:34,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 457 flow [2022-11-25 18:03:34,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 437 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-25 18:03:34,100 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-11-25 18:03:34,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=480, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-11-25 18:03:34,101 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-11-25 18:03:34,101 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-11-25 18:03:34,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 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 18:03:34,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2022-11-25 18:03:34,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-25 18:03:34,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-25 18:03:34,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-25 18:03:34,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-11-25 18:03:34,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-11-25 18:03:34,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-25 18:03:34,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-25 18:03:34,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-25 18:03:34,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-25 18:03:34,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-25 18:03:34,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-25 18:03:34,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2022-11-25 18:03:34,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2022-11-25 18:03:34,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-25 18:03:34,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-25 18:03:34,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-25 18:03:34,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-25 18:03:34,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-25 18:03:34,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-25 18:03:34,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-25 18:03:34,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-25 18:03:34,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:03:34,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:03:34,314 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:03:34,319 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:03:34,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:03:34,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:03:34 BasicIcfg [2022-11-25 18:03:34,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:03:34,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:03:34,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:03:34,322 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:03:34,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:02:50" (3/4) ... [2022-11-25 18:03:34,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:03:34,330 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 18:03:34,330 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 18:03:34,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-25 18:03:34,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:03:34,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 18:03:34,337 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:03:34,379 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:03:34,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:03:34,380 INFO L158 Benchmark]: Toolchain (without parser) took 44781.13ms. Allocated memory was 148.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 116.4MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 535.0MB. Max. memory is 16.1GB. [2022-11-25 18:03:34,381 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 148.9MB. Free memory was 118.0MB in the beginning and 117.9MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:03:34,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.54ms. Allocated memory is still 148.9MB. Free memory was 116.4MB in the beginning and 103.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 18:03:34,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.45ms. Allocated memory is still 148.9MB. Free memory was 103.8MB in the beginning and 102.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:03:34,382 INFO L158 Benchmark]: Boogie Preprocessor took 52.25ms. Allocated memory is still 148.9MB. Free memory was 102.2MB in the beginning and 100.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:03:34,382 INFO L158 Benchmark]: RCFGBuilder took 716.22ms. Allocated memory is still 148.9MB. Free memory was 100.3MB in the beginning and 79.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 18:03:34,382 INFO L158 Benchmark]: TraceAbstraction took 43491.19ms. Allocated memory was 148.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 78.6MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 493.0MB. Max. memory is 16.1GB. [2022-11-25 18:03:34,383 INFO L158 Benchmark]: Witness Printer took 58.40ms. Allocated memory is still 3.6GB. Free memory was 3.0GB in the beginning and 3.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:03:34,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 148.9MB. Free memory was 118.0MB in the beginning and 117.9MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.54ms. Allocated memory is still 148.9MB. Free memory was 116.4MB in the beginning and 103.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.45ms. Allocated memory is still 148.9MB. Free memory was 103.8MB in the beginning and 102.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.25ms. Allocated memory is still 148.9MB. Free memory was 102.2MB in the beginning and 100.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 716.22ms. Allocated memory is still 148.9MB. Free memory was 100.3MB in the beginning and 79.6MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 43491.19ms. Allocated memory was 148.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 78.6MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 493.0MB. Max. memory is 16.1GB. * Witness Printer took 58.40ms. Allocated memory is still 3.6GB. Free memory was 3.0GB in the beginning and 3.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2s, 201 PlacesBefore, 36 PlacesAfterwards, 212 TransitionsBefore, 36 TransitionsAfterwards, 4028 CoEnabledTransitionPairs, 7 FixpointIterations, 112 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 12 ConcurrentYvCompositions, 11 ChoiceCompositions, 231 TotalNumberOfCompositions, 4791 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4186, independent: 4097, independent conditional: 0, independent unconditional: 4097, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2749, independent: 2722, independent conditional: 0, independent unconditional: 2722, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2749, independent: 2722, independent conditional: 0, independent unconditional: 2722, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4186, independent: 1375, independent conditional: 0, independent unconditional: 1375, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 2749, unknown conditional: 0, unknown unconditional: 2749] , Statistics on independence cache: Total cache size (in pairs): 131, Positive cache size: 122, Positive conditional cache size: 0, Positive unconditional cache size: 122, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 299 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 43.3s, OverallIterations: 20, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 26.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3863 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2971 mSDsluCounter, 1160 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 842 mSDsCounter, 225 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5947 IncrementalHoareTripleChecker+Invalid, 6172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 225 mSolverCounterUnsat, 318 mSDtfsCounter, 5947 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=448occurred in iteration=14, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 254 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 989 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1673 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 37 InterpolantComputations, 16 PerfectInterpolantSequences, 113/229 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:03:34,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca51adf4-1545-4fd9-9bb3-c83c10f4ba3b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE