./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN --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 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --- 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-6b4ec56 [2022-11-20 12:21:59,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:21:59,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:21:59,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:21:59,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:21:59,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:21:59,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:21:59,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:21:59,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:21:59,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:21:59,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:21:59,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:21:59,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:21:59,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:21:59,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:21:59,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:21:59,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:21:59,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:21:59,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:21:59,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:21:59,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:21:59,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:21:59,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:21:59,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:21:59,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:21:59,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:21:59,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:21:59,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:21:59,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:21:59,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:21:59,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:21:59,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:21:59,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:21:59,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:21:59,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:21:59,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:21:59,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:21:59,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:21:59,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:21:59,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:21:59,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:21:59,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:21:59,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:21:59,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:21:59,317 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:21:59,317 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:21:59,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:21:59,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:21:59,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:21:59,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:21:59,319 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:21:59,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:21:59,320 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:21:59,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:21:59,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:21:59,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:21:59,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:21:59,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:21:59,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:21:59,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:21:59,322 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:21:59,322 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:21:59,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:21:59,323 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:21:59,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:21:59,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:21:59,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:21:59,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:21:59,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:21:59,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:21:59,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:21:59,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:21:59,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:21:59,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:21:59,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:21:59,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:21:59,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:21:59,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a [2022-11-20 12:21:59,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:21:59,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:21:59,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:21:59,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:21:59,658 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:21:59,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-20 12:22:03,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:22:03,432 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:22:03,433 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2022-11-20 12:22:03,441 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/data/cae5e3f5a/a615762627974bc6b3cf685a3a0ca588/FLAG8821b7e73 [2022-11-20 12:22:03,459 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/data/cae5e3f5a/a615762627974bc6b3cf685a3a0ca588 [2022-11-20 12:22:03,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:22:03,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:22:03,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:22:03,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:22:03,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:22:03,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110c6590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03, skipping insertion in model container [2022-11-20 12:22:03,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:22:03,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:22:03,751 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_6f8fb04e-9da1-4d2f-962a-c8275967d405/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-20 12:22:03,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:22:03,768 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:22:03,795 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_6f8fb04e-9da1-4d2f-962a-c8275967d405/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3027,3040] [2022-11-20 12:22:03,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:22:03,813 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:22:03,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03 WrapperNode [2022-11-20 12:22:03,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:22:03,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:22:03,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:22:03,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:22:03,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,863 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 159 [2022-11-20 12:22:03,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:22:03,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:22:03,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:22:03,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:22:03,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,895 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:22:03,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:22:03,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:22:03,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:22:03,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (1/1) ... [2022-11-20 12:22:03,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:22:03,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:03,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:22:03,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:22:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:22:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:22:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:22:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:22:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:22:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:22:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:22:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:22:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:22:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:22:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:22:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:22:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:22:03,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:22:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:22:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:22:03,986 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:22:04,107 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:22:04,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:22:04,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:22:04,803 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:22:04,803 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:22:04,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:04 BoogieIcfgContainer [2022-11-20 12:22:04,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:22:04,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:22:04,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:22:04,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:22:04,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:22:03" (1/3) ... [2022-11-20 12:22:04,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70834c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:22:04, skipping insertion in model container [2022-11-20 12:22:04,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:22:03" (2/3) ... [2022-11-20 12:22:04,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70834c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:22:04, skipping insertion in model container [2022-11-20 12:22:04,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:22:04" (3/3) ... [2022-11-20 12:22:04,818 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2022-11-20 12:22:04,829 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:22:04,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:22:04,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 12:22:04,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:22:04,974 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:22:05,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 272 flow [2022-11-20 12:22:05,126 INFO L130 PetriNetUnfolder]: 7/121 cut-off events. [2022-11-20 12:22:05,126 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:22:05,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 7/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 172 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2022-11-20 12:22:05,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 272 flow [2022-11-20 12:22:05,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 105 transitions, 222 flow [2022-11-20 12:22:05,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:22:05,162 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;@720307c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:22:05,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-20 12:22:05,184 INFO L130 PetriNetUnfolder]: 3/57 cut-off events. [2022-11-20 12:22:05,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:22:05,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:05,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:05,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:05,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash 274154915, now seen corresponding path program 1 times [2022-11-20 12:22:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:05,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569404351] [2022-11-20 12:22:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:05,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:05,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:05,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569404351] [2022-11-20 12:22:05,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569404351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:05,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:05,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:22:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981843151] [2022-11-20 12:22:05,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:05,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:22:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:05,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:22:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:06,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-20 12:22:06,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:06,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:06,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-20 12:22:06,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:06,766 INFO L130 PetriNetUnfolder]: 1169/2237 cut-off events. [2022-11-20 12:22:06,766 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2022-11-20 12:22:06,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4090 conditions, 2237 events. 1169/2237 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14598 event pairs, 213 based on Foata normal form. 152/1334 useless extension candidates. Maximal degree in co-relation 3671. Up to 1008 conditions per place. [2022-11-20 12:22:06,806 INFO L137 encePairwiseOnDemand]: 100/124 looper letters, 32 selfloop transitions, 15 changer transitions 1/118 dead transitions. [2022-11-20 12:22:06,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 353 flow [2022-11-20 12:22:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:22:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:22:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2022-11-20 12:22:06,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7919354838709678 [2022-11-20 12:22:06,835 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2022-11-20 12:22:06,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2022-11-20 12:22:06,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:06,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2022-11-20 12:22:06,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:06,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:06,861 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:06,863 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 222 flow. Second operand 5 states and 491 transitions. [2022-11-20 12:22:06,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 353 flow [2022-11-20 12:22:06,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 118 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:22:06,884 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 308 flow [2022-11-20 12:22:06,887 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2022-11-20 12:22:06,896 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 0 predicate places. [2022-11-20 12:22:06,896 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 308 flow [2022-11-20 12:22:06,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:06,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:06,898 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:06,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:22:06,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash 274154916, now seen corresponding path program 1 times [2022-11-20 12:22:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:06,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871485716] [2022-11-20 12:22:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:06,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:07,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:07,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871485716] [2022-11-20 12:22:07,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871485716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:07,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:07,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117252947] [2022-11-20 12:22:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:07,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:07,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:07,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:07,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-20 12:22:07,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:07,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:07,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-20 12:22:07,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:07,566 INFO L130 PetriNetUnfolder]: 957/1754 cut-off events. [2022-11-20 12:22:07,567 INFO L131 PetriNetUnfolder]: For 752/752 co-relation queries the response was YES. [2022-11-20 12:22:07,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 1754 events. 957/1754 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10339 event pairs, 274 based on Foata normal form. 123/1246 useless extension candidates. Maximal degree in co-relation 4011. Up to 1245 conditions per place. [2022-11-20 12:22:07,595 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 32 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2022-11-20 12:22:07,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 358 flow [2022-11-20 12:22:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:22:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:22:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-20 12:22:07,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-11-20 12:22:07,622 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-20 12:22:07,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-20 12:22:07,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:07,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-20 12:22:07,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:07,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:07,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:07,627 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 308 flow. Second operand 4 states and 377 transitions. [2022-11-20 12:22:07,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 358 flow [2022-11-20 12:22:07,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:22:07,635 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 290 flow [2022-11-20 12:22:07,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2022-11-20 12:22:07,636 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, -2 predicate places. [2022-11-20 12:22:07,637 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 290 flow [2022-11-20 12:22:07,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:07,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:07,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:22:07,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash 274154917, now seen corresponding path program 1 times [2022-11-20 12:22:07,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:07,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21751834] [2022-11-20 12:22:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:07,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:07,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21751834] [2022-11-20 12:22:07,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21751834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:07,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:07,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:22:07,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953760650] [2022-11-20 12:22:07,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:22:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:22:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:07,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-20 12:22:07,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:07,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:07,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-20 12:22:07,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:08,408 INFO L130 PetriNetUnfolder]: 1171/2142 cut-off events. [2022-11-20 12:22:08,409 INFO L131 PetriNetUnfolder]: For 658/658 co-relation queries the response was YES. [2022-11-20 12:22:08,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 2142 events. 1171/2142 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13214 event pairs, 136 based on Foata normal form. 47/1470 useless extension candidates. Maximal degree in co-relation 5076. Up to 932 conditions per place. [2022-11-20 12:22:08,435 INFO L137 encePairwiseOnDemand]: 115/124 looper letters, 52 selfloop transitions, 7 changer transitions 0/127 dead transitions. [2022-11-20 12:22:08,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 127 transitions, 499 flow [2022-11-20 12:22:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:22:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:22:08,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2022-11-20 12:22:08,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7548387096774194 [2022-11-20 12:22:08,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2022-11-20 12:22:08,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2022-11-20 12:22:08,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:08,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2022-11-20 12:22:08,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,443 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 290 flow. Second operand 5 states and 468 transitions. [2022-11-20 12:22:08,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 127 transitions, 499 flow [2022-11-20 12:22:08,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 127 transitions, 493 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:22:08,448 INFO L231 Difference]: Finished difference. Result has 109 places, 109 transitions, 340 flow [2022-11-20 12:22:08,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=340, PETRI_PLACES=109, PETRI_TRANSITIONS=109} [2022-11-20 12:22:08,449 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2022-11-20 12:22:08,450 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 109 transitions, 340 flow [2022-11-20 12:22:08,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:08,450 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:08,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:22:08,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:08,452 INFO L85 PathProgramCache]: Analyzing trace with hash 274154918, now seen corresponding path program 1 times [2022-11-20 12:22:08,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:08,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199674019] [2022-11-20 12:22:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:08,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:08,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199674019] [2022-11-20 12:22:08,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199674019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:08,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:08,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338137819] [2022-11-20 12:22:08,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:08,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:08,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-20 12:22:08,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 109 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:08,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-20 12:22:08,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:08,899 INFO L130 PetriNetUnfolder]: 612/1183 cut-off events. [2022-11-20 12:22:08,900 INFO L131 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2022-11-20 12:22:08,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 1183 events. 612/1183 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6609 event pairs, 163 based on Foata normal form. 72/970 useless extension candidates. Maximal degree in co-relation 2997. Up to 835 conditions per place. [2022-11-20 12:22:08,916 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 31 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2022-11-20 12:22:08,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 376 flow [2022-11-20 12:22:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:22:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:22:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2022-11-20 12:22:08,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620967741935484 [2022-11-20 12:22:08,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2022-11-20 12:22:08,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2022-11-20 12:22:08,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:08,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2022-11-20 12:22:08,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,930 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,931 INFO L175 Difference]: Start difference. First operand has 109 places, 109 transitions, 340 flow. Second operand 4 states and 378 transitions. [2022-11-20 12:22:08,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 376 flow [2022-11-20 12:22:08,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 366 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:22:08,946 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 304 flow [2022-11-20 12:22:08,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=107, PETRI_TRANSITIONS=105} [2022-11-20 12:22:08,948 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2022-11-20 12:22:08,948 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 304 flow [2022-11-20 12:22:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:08,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:08,950 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:08,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:22:08,951 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:08,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2115945332, now seen corresponding path program 1 times [2022-11-20 12:22:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:08,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701368840] [2022-11-20 12:22:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:08,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:09,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701368840] [2022-11-20 12:22:09,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701368840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:09,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569727589] [2022-11-20 12:22:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:09,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:09,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:09,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:09,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:22:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:09,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:22:09,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:09,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:09,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569727589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:22:09,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:22:09,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-20 12:22:09,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093606540] [2022-11-20 12:22:09,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:09,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:22:09,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:09,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:22:09,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:22:09,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-20 12:22:09,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 105 transitions, 304 flow. Second operand has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:09,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:09,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-20 12:22:09,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:10,847 INFO L130 PetriNetUnfolder]: 2355/4926 cut-off events. [2022-11-20 12:22:10,848 INFO L131 PetriNetUnfolder]: For 2283/2283 co-relation queries the response was YES. [2022-11-20 12:22:10,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11330 conditions, 4926 events. 2355/4926 cut-off events. For 2283/2283 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 37311 event pairs, 49 based on Foata normal form. 309/4175 useless extension candidates. Maximal degree in co-relation 11290. Up to 1265 conditions per place. [2022-11-20 12:22:10,901 INFO L137 encePairwiseOnDemand]: 104/124 looper letters, 57 selfloop transitions, 57 changer transitions 0/184 dead transitions. [2022-11-20 12:22:10,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 184 transitions, 863 flow [2022-11-20 12:22:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:22:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:22:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 974 transitions. [2022-11-20 12:22:10,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.785483870967742 [2022-11-20 12:22:10,905 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 974 transitions. [2022-11-20 12:22:10,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 974 transitions. [2022-11-20 12:22:10,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:10,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 974 transitions. [2022-11-20 12:22:10,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 97.4) internal successors, (974), 10 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:10,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:10,913 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 124.0) internal successors, (1364), 11 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:10,913 INFO L175 Difference]: Start difference. First operand has 107 places, 105 transitions, 304 flow. Second operand 10 states and 974 transitions. [2022-11-20 12:22:10,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 184 transitions, 863 flow [2022-11-20 12:22:10,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 184 transitions, 857 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:22:10,920 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 810 flow [2022-11-20 12:22:10,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=810, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2022-11-20 12:22:10,921 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 10 predicate places. [2022-11-20 12:22:10,922 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 810 flow [2022-11-20 12:22:10,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 87.6923076923077) internal successors, (1140), 13 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:10,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:10,923 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:10,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:22:11,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:11,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1620861928, now seen corresponding path program 1 times [2022-11-20 12:22:11,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:11,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992235381] [2022-11-20 12:22:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:11,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:11,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992235381] [2022-11-20 12:22:11,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992235381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:11,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:11,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:22:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744635122] [2022-11-20 12:22:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:11,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:22:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:22:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:22:11,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-20 12:22:11,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:11,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:11,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-20 12:22:11,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:13,411 INFO L130 PetriNetUnfolder]: 4360/9651 cut-off events. [2022-11-20 12:22:13,411 INFO L131 PetriNetUnfolder]: For 20883/20883 co-relation queries the response was YES. [2022-11-20 12:22:13,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30805 conditions, 9651 events. 4360/9651 cut-off events. For 20883/20883 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 85141 event pairs, 376 based on Foata normal form. 355/8025 useless extension candidates. Maximal degree in co-relation 20250. Up to 2785 conditions per place. [2022-11-20 12:22:13,544 INFO L137 encePairwiseOnDemand]: 104/124 looper letters, 102 selfloop transitions, 60 changer transitions 0/232 dead transitions. [2022-11-20 12:22:13,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 232 transitions, 1773 flow [2022-11-20 12:22:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:22:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:22:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2022-11-20 12:22:13,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7795698924731183 [2022-11-20 12:22:13,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2022-11-20 12:22:13,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2022-11-20 12:22:13,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:13,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2022-11-20 12:22:13,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:13,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:13,554 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:13,554 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 810 flow. Second operand 6 states and 580 transitions. [2022-11-20 12:22:13,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 232 transitions, 1773 flow [2022-11-20 12:22:13,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 232 transitions, 1697 flow, removed 35 selfloop flow, removed 3 redundant places. [2022-11-20 12:22:13,660 INFO L231 Difference]: Finished difference. Result has 122 places, 204 transitions, 1563 flow [2022-11-20 12:22:13,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1563, PETRI_PLACES=122, PETRI_TRANSITIONS=204} [2022-11-20 12:22:13,663 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 14 predicate places. [2022-11-20 12:22:13,664 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 204 transitions, 1563 flow [2022-11-20 12:22:13,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:13,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:13,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:13,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:22:13,665 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash 414630081, now seen corresponding path program 1 times [2022-11-20 12:22:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:13,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052963674] [2022-11-20 12:22:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:13,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:13,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052963674] [2022-11-20 12:22:13,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052963674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:13,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:13,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291595774] [2022-11-20 12:22:13,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:13,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:13,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:13,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:13,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:13,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-20 12:22:13,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 204 transitions, 1563 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:13,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:13,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-20 12:22:13,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:14,948 INFO L130 PetriNetUnfolder]: 2158/5357 cut-off events. [2022-11-20 12:22:14,948 INFO L131 PetriNetUnfolder]: For 16900/16900 co-relation queries the response was YES. [2022-11-20 12:22:14,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19402 conditions, 5357 events. 2158/5357 cut-off events. For 16900/16900 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 45564 event pairs, 366 based on Foata normal form. 0/4359 useless extension candidates. Maximal degree in co-relation 18900. Up to 2848 conditions per place. [2022-11-20 12:22:15,019 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 119 selfloop transitions, 3 changer transitions 0/193 dead transitions. [2022-11-20 12:22:15,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 193 transitions, 1702 flow [2022-11-20 12:22:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:22:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:22:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-20 12:22:15,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-11-20 12:22:15,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-20 12:22:15,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-20 12:22:15,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:15,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-20 12:22:15,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:15,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:15,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:15,026 INFO L175 Difference]: Start difference. First operand has 122 places, 204 transitions, 1563 flow. Second operand 4 states and 377 transitions. [2022-11-20 12:22:15,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 193 transitions, 1702 flow [2022-11-20 12:22:15,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 193 transitions, 1644 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-11-20 12:22:15,079 INFO L231 Difference]: Finished difference. Result has 122 places, 193 transitions, 1406 flow [2022-11-20 12:22:15,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1406, PETRI_PLACES=122, PETRI_TRANSITIONS=193} [2022-11-20 12:22:15,080 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 14 predicate places. [2022-11-20 12:22:15,080 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 193 transitions, 1406 flow [2022-11-20 12:22:15,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:15,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:15,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:15,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:22:15,081 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash 414630080, now seen corresponding path program 1 times [2022-11-20 12:22:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:15,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78481173] [2022-11-20 12:22:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:15,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:15,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78481173] [2022-11-20 12:22:15,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78481173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:15,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:15,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:22:15,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927888159] [2022-11-20 12:22:15,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:15,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:22:15,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:15,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:22:15,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:15,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-20 12:22:15,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 193 transitions, 1406 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:15,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:15,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-20 12:22:15,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:17,474 INFO L130 PetriNetUnfolder]: 3897/9708 cut-off events. [2022-11-20 12:22:17,474 INFO L131 PetriNetUnfolder]: For 30438/30438 co-relation queries the response was YES. [2022-11-20 12:22:17,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32085 conditions, 9708 events. 3897/9708 cut-off events. For 30438/30438 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 93179 event pairs, 346 based on Foata normal form. 74/8135 useless extension candidates. Maximal degree in co-relation 32027. Up to 3839 conditions per place. [2022-11-20 12:22:17,599 INFO L137 encePairwiseOnDemand]: 116/124 looper letters, 180 selfloop transitions, 18 changer transitions 0/266 dead transitions. [2022-11-20 12:22:17,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 266 transitions, 2564 flow [2022-11-20 12:22:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:22:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:22:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2022-11-20 12:22:17,602 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-11-20 12:22:17,602 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2022-11-20 12:22:17,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2022-11-20 12:22:17,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:17,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2022-11-20 12:22:17,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:17,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:17,607 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:17,607 INFO L175 Difference]: Start difference. First operand has 122 places, 193 transitions, 1406 flow. Second operand 5 states and 465 transitions. [2022-11-20 12:22:17,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 266 transitions, 2564 flow [2022-11-20 12:22:17,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 2558 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:22:17,707 INFO L231 Difference]: Finished difference. Result has 124 places, 205 transitions, 1646 flow [2022-11-20 12:22:17,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1646, PETRI_PLACES=124, PETRI_TRANSITIONS=205} [2022-11-20 12:22:17,713 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 16 predicate places. [2022-11-20 12:22:17,713 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 205 transitions, 1646 flow [2022-11-20 12:22:17,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:17,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:17,714 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:17,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:22:17,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash -99185913, now seen corresponding path program 1 times [2022-11-20 12:22:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:17,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464149656] [2022-11-20 12:22:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:17,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:18,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464149656] [2022-11-20 12:22:18,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464149656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:18,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053815599] [2022-11-20 12:22:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:18,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:18,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:18,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:22:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:18,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:22:18,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:18,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:18,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053815599] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:18,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:22:18,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2022-11-20 12:22:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565511617] [2022-11-20 12:22:18,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:18,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:22:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:22:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:22:18,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 124 [2022-11-20 12:22:18,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 205 transitions, 1646 flow. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:18,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:18,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 124 [2022-11-20 12:22:18,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:21,914 INFO L130 PetriNetUnfolder]: 5752/15272 cut-off events. [2022-11-20 12:22:21,914 INFO L131 PetriNetUnfolder]: For 60859/60859 co-relation queries the response was YES. [2022-11-20 12:22:21,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50908 conditions, 15272 events. 5752/15272 cut-off events. For 60859/60859 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 164693 event pairs, 287 based on Foata normal form. 380/14029 useless extension candidates. Maximal degree in co-relation 49930. Up to 4653 conditions per place. [2022-11-20 12:22:22,108 INFO L137 encePairwiseOnDemand]: 107/124 looper letters, 212 selfloop transitions, 41 changer transitions 0/321 dead transitions. [2022-11-20 12:22:22,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 321 transitions, 3435 flow [2022-11-20 12:22:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:22:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:22:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2022-11-20 12:22:22,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594086021505376 [2022-11-20 12:22:22,112 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2022-11-20 12:22:22,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2022-11-20 12:22:22,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:22,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2022-11-20 12:22:22,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:22,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:22,117 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:22,117 INFO L175 Difference]: Start difference. First operand has 124 places, 205 transitions, 1646 flow. Second operand 6 states and 565 transitions. [2022-11-20 12:22:22,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 321 transitions, 3435 flow [2022-11-20 12:22:22,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 321 transitions, 3399 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:22:22,337 INFO L231 Difference]: Finished difference. Result has 129 places, 237 transitions, 2271 flow [2022-11-20 12:22:22,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2271, PETRI_PLACES=129, PETRI_TRANSITIONS=237} [2022-11-20 12:22:22,339 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 21 predicate places. [2022-11-20 12:22:22,339 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 237 transitions, 2271 flow [2022-11-20 12:22:22,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:22,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:22,340 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:22,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:22,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:22,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash 472417681, now seen corresponding path program 1 times [2022-11-20 12:22:22,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:22,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086762758] [2022-11-20 12:22:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:22,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:22:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:22,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086762758] [2022-11-20 12:22:22,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086762758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:22,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:22,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:22:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401411924] [2022-11-20 12:22:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:22:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:22,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:22:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:22:22,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 124 [2022-11-20 12:22:22,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 237 transitions, 2271 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:22,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:22,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 124 [2022-11-20 12:22:22,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:24,347 INFO L130 PetriNetUnfolder]: 3149/9162 cut-off events. [2022-11-20 12:22:24,347 INFO L131 PetriNetUnfolder]: For 48917/48917 co-relation queries the response was YES. [2022-11-20 12:22:24,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32835 conditions, 9162 events. 3149/9162 cut-off events. For 48917/48917 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 95624 event pairs, 588 based on Foata normal form. 207/8347 useless extension candidates. Maximal degree in co-relation 31821. Up to 4286 conditions per place. [2022-11-20 12:22:24,485 INFO L137 encePairwiseOnDemand]: 120/124 looper letters, 147 selfloop transitions, 3 changer transitions 0/221 dead transitions. [2022-11-20 12:22:24,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 221 transitions, 2331 flow [2022-11-20 12:22:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:22:24,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:22:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-20 12:22:24,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7580645161290323 [2022-11-20 12:22:24,489 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-20 12:22:24,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-20 12:22:24,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:24,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-20 12:22:24,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:24,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:24,494 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:24,494 INFO L175 Difference]: Start difference. First operand has 129 places, 237 transitions, 2271 flow. Second operand 4 states and 376 transitions. [2022-11-20 12:22:24,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 221 transitions, 2331 flow [2022-11-20 12:22:24,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 221 transitions, 2321 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-20 12:22:24,593 INFO L231 Difference]: Finished difference. Result has 129 places, 221 transitions, 2027 flow [2022-11-20 12:22:24,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2027, PETRI_PLACES=129, PETRI_TRANSITIONS=221} [2022-11-20 12:22:24,596 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 21 predicate places. [2022-11-20 12:22:24,596 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 221 transitions, 2027 flow [2022-11-20 12:22:24,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:24,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:24,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:24,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:22:24,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:24,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:24,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1824569478, now seen corresponding path program 1 times [2022-11-20 12:22:24,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:24,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915796281] [2022-11-20 12:22:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:24,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:24,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:24,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915796281] [2022-11-20 12:22:24,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915796281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:24,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:22:24,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:22:24,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860368198] [2022-11-20 12:22:24,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:24,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:22:24,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:24,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:22:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:22:24,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-20 12:22:24,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 221 transitions, 2027 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:24,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:24,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-20 12:22:24,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:26,466 INFO L130 PetriNetUnfolder]: 2775/8452 cut-off events. [2022-11-20 12:22:26,466 INFO L131 PetriNetUnfolder]: For 42686/42686 co-relation queries the response was YES. [2022-11-20 12:22:26,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29773 conditions, 8452 events. 2775/8452 cut-off events. For 42686/42686 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 89519 event pairs, 159 based on Foata normal form. 139/7633 useless extension candidates. Maximal degree in co-relation 29709. Up to 3622 conditions per place. [2022-11-20 12:22:26,558 INFO L137 encePairwiseOnDemand]: 113/124 looper letters, 177 selfloop transitions, 17 changer transitions 0/265 dead transitions. [2022-11-20 12:22:26,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 265 transitions, 2924 flow [2022-11-20 12:22:26,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:22:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:22:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2022-11-20 12:22:26,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7612903225806451 [2022-11-20 12:22:26,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2022-11-20 12:22:26,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2022-11-20 12:22:26,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:26,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2022-11-20 12:22:26,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:26,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:26,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:26,566 INFO L175 Difference]: Start difference. First operand has 129 places, 221 transitions, 2027 flow. Second operand 5 states and 472 transitions. [2022-11-20 12:22:26,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 265 transitions, 2924 flow [2022-11-20 12:22:26,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 265 transitions, 2918 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:22:26,653 INFO L231 Difference]: Finished difference. Result has 131 places, 228 transitions, 2207 flow [2022-11-20 12:22:26,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2207, PETRI_PLACES=131, PETRI_TRANSITIONS=228} [2022-11-20 12:22:26,654 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 23 predicate places. [2022-11-20 12:22:26,654 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 228 transitions, 2207 flow [2022-11-20 12:22:26,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:26,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:26,655 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:26,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:22:26,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1534869285, now seen corresponding path program 1 times [2022-11-20 12:22:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:26,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349756338] [2022-11-20 12:22:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:26,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349756338] [2022-11-20 12:22:26,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349756338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368594758] [2022-11-20 12:22:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:26,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:26,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:26,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:26,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:22:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:27,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:22:27,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:27,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:22:27,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368594758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:22:27,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:22:27,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-20 12:22:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648246122] [2022-11-20 12:22:27,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:22:27,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:22:27,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:27,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:22:27,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:22:27,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 124 [2022-11-20 12:22:27,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 228 transitions, 2207 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:27,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:27,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 124 [2022-11-20 12:22:27,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:28,482 INFO L130 PetriNetUnfolder]: 1988/6590 cut-off events. [2022-11-20 12:22:28,482 INFO L131 PetriNetUnfolder]: For 36009/36009 co-relation queries the response was YES. [2022-11-20 12:22:28,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23025 conditions, 6590 events. 1988/6590 cut-off events. For 36009/36009 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 68670 event pairs, 75 based on Foata normal form. 94/5906 useless extension candidates. Maximal degree in co-relation 22406. Up to 2630 conditions per place. [2022-11-20 12:22:28,561 INFO L137 encePairwiseOnDemand]: 115/124 looper letters, 163 selfloop transitions, 14 changer transitions 0/248 dead transitions. [2022-11-20 12:22:28,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 248 transitions, 2777 flow [2022-11-20 12:22:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:22:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:22:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2022-11-20 12:22:28,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7473118279569892 [2022-11-20 12:22:28,564 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2022-11-20 12:22:28,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2022-11-20 12:22:28,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:28,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2022-11-20 12:22:28,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:28,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:28,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:28,570 INFO L175 Difference]: Start difference. First operand has 131 places, 228 transitions, 2207 flow. Second operand 6 states and 556 transitions. [2022-11-20 12:22:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 248 transitions, 2777 flow [2022-11-20 12:22:28,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 248 transitions, 2702 flow, removed 29 selfloop flow, removed 3 redundant places. [2022-11-20 12:22:28,658 INFO L231 Difference]: Finished difference. Result has 134 places, 221 transitions, 2095 flow [2022-11-20 12:22:28,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=134, PETRI_TRANSITIONS=221} [2022-11-20 12:22:28,659 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 26 predicate places. [2022-11-20 12:22:28,659 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 221 transitions, 2095 flow [2022-11-20 12:22:28,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:28,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:28,661 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:28,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:28,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:28,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:28,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:28,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1170370333, now seen corresponding path program 2 times [2022-11-20 12:22:28,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:28,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808762705] [2022-11-20 12:22:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:28,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808762705] [2022-11-20 12:22:29,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808762705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675095503] [2022-11-20 12:22:29,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:22:29,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:29,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:29,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:29,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:22:29,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:22:29,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:22:29,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:22:29,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:29,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:29,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675095503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:22:29,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:22:29,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-20 12:22:29,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749991368] [2022-11-20 12:22:29,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:29,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:22:29,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:22:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:22:29,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 124 [2022-11-20 12:22:29,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 221 transitions, 2095 flow. Second operand has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:29,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:29,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 124 [2022-11-20 12:22:29,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:22:35,196 INFO L130 PetriNetUnfolder]: 8343/27034 cut-off events. [2022-11-20 12:22:35,197 INFO L131 PetriNetUnfolder]: For 204644/204644 co-relation queries the response was YES. [2022-11-20 12:22:35,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85946 conditions, 27034 events. 8343/27034 cut-off events. For 204644/204644 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 326193 event pairs, 47 based on Foata normal form. 2884/26717 useless extension candidates. Maximal degree in co-relation 84382. Up to 4754 conditions per place. [2022-11-20 12:22:35,462 INFO L137 encePairwiseOnDemand]: 106/124 looper letters, 150 selfloop transitions, 373 changer transitions 0/593 dead transitions. [2022-11-20 12:22:35,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 593 transitions, 7463 flow [2022-11-20 12:22:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:22:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 12:22:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1576 transitions. [2022-11-20 12:22:35,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7943548387096774 [2022-11-20 12:22:35,468 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1576 transitions. [2022-11-20 12:22:35,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1576 transitions. [2022-11-20 12:22:35,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:22:35,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1576 transitions. [2022-11-20 12:22:35,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.5) internal successors, (1576), 16 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:35,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:35,479 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:35,480 INFO L175 Difference]: Start difference. First operand has 134 places, 221 transitions, 2095 flow. Second operand 16 states and 1576 transitions. [2022-11-20 12:22:35,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 593 transitions, 7463 flow [2022-11-20 12:22:35,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 593 transitions, 7424 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:22:35,783 INFO L231 Difference]: Finished difference. Result has 155 places, 549 transitions, 8157 flow [2022-11-20 12:22:35,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8157, PETRI_PLACES=155, PETRI_TRANSITIONS=549} [2022-11-20 12:22:35,785 INFO L288 CegarLoopForPetriNet]: 108 programPoint places, 47 predicate places. [2022-11-20 12:22:35,785 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 549 transitions, 8157 flow [2022-11-20 12:22:35,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 87.47368421052632) internal successors, (1662), 19 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:35,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:22:35,787 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:22:35,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:22:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:22:35,993 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-20 12:22:35,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:22:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash 687202108, now seen corresponding path program 1 times [2022-11-20 12:22:35,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:22:35,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633431406] [2022-11-20 12:22:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:35,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:22:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:22:36,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:22:36,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633431406] [2022-11-20 12:22:36,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633431406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:22:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128377820] [2022-11-20 12:22:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:22:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:22:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:22:36,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:22:36,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f8fb04e-9da1-4d2f-962a-c8275967d405/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:22:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:22:36,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:22:36,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:22:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:22:36,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:22:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:22:36,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128377820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:22:36,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:22:36,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2022-11-20 12:22:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616978248] [2022-11-20 12:22:36,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:22:36,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:22:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:22:36,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:22:36,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:22:36,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 124 [2022-11-20 12:22:36,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 549 transitions, 8157 flow. Second operand has 15 states, 15 states have (on average 79.53333333333333) internal successors, (1193), 15 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:22:36,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:22:36,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 124 [2022-11-20 12:22:36,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand