./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro --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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- 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-8393723 [2022-11-18 20:39:29,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:39:29,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:39:29,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:39:29,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:39:29,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:39:29,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:39:29,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:39:29,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:39:29,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:39:29,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:39:29,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:39:29,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:39:29,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:39:29,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:39:29,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:39:29,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:39:29,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:39:29,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:39:29,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:39:29,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:39:29,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:39:29,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:39:29,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:39:29,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:39:29,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:39:29,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:39:29,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:39:29,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:39:29,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:39:29,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:39:29,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:39:29,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:39:29,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:39:29,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:39:29,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:39:29,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:39:29,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:39:29,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:39:29,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:39:29,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:39:29,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:39:29,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:39:29,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:39:29,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:39:29,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:39:29,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:39:29,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:39:29,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:39:29,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:39:29,324 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:39:29,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:39:29,325 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:39:29,326 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:39:29,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:39:29,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:39:29,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:39:29,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:39:29,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:39:29,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:39:29,327 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:39:29,328 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:39:29,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:39:29,328 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:39:29,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:39:29,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:39:29,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:39:29,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:39:29,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:29,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:39:29,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:39:29,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:39:29,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:39:29,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:39:29,333 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:39:29,333 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:39:29,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:39:29,334 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_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-11-18 20:39:29,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:39:29,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:39:29,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:39:29,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:39:29,691 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:39:29,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-11-18 20:39:29,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/data/2f442a6b6/3e3ae0dfca1e4710a797548e482b7485/FLAG8bcdb45f4 [2022-11-18 20:39:30,394 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:39:30,397 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2022-11-18 20:39:30,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/data/2f442a6b6/3e3ae0dfca1e4710a797548e482b7485/FLAG8bcdb45f4 [2022-11-18 20:39:30,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/data/2f442a6b6/3e3ae0dfca1e4710a797548e482b7485 [2022-11-18 20:39:30,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:39:30,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:39:30,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:30,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:39:30,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:39:30,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:30" (1/1) ... [2022-11-18 20:39:30,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228bcdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:30, skipping insertion in model container [2022-11-18 20:39:30,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:39:30" (1/1) ... [2022-11-18 20:39:30,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:39:30,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:39:31,079 WARN L234 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_31a17b1f-6822-41ef-b259-a85a9aca238d/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-11-18 20:39:31,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:31,094 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:39:31,132 WARN L234 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_31a17b1f-6822-41ef-b259-a85a9aca238d/sv-benchmarks/c/weaver/chl-word-subst.wvr.c[3345,3358] [2022-11-18 20:39:31,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:39:31,154 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:39:31,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31 WrapperNode [2022-11-18 20:39:31,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:39:31,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:31,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:39:31,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:39:31,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,220 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 182 [2022-11-18 20:39:31,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:39:31,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:39:31,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:39:31,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:39:31,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:39:31,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:39:31,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:39:31,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:39:31,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (1/1) ... [2022-11-18 20:39:31,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:39:31,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:31,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:39:31,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:39:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:39:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:39:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:39:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:39:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:39:31,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:39:31,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:39:31,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:39:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:39:31,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:39:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:39:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:39:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:39:31,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:39:31,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:39:31,364 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:39:31,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:39:31,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:39:32,364 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:39:32,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:39:32,378 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:39:32,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:32 BoogieIcfgContainer [2022-11-18 20:39:32,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:39:32,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:39:32,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:39:32,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:39:32,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:39:30" (1/3) ... [2022-11-18 20:39:32,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5795f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:32, skipping insertion in model container [2022-11-18 20:39:32,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:39:31" (2/3) ... [2022-11-18 20:39:32,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5795f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:39:32, skipping insertion in model container [2022-11-18 20:39:32,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:39:32" (3/3) ... [2022-11-18 20:39:32,393 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-11-18 20:39:32,403 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:39:32,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:39:32,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 20:39:32,416 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:39:32,550 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:39:32,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 345 transitions, 714 flow [2022-11-18 20:39:32,854 INFO L130 PetriNetUnfolder]: 29/342 cut-off events. [2022-11-18 20:39:32,855 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:39:32,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 342 events. 29/342 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 547 event pairs, 0 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-18 20:39:32,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 345 transitions, 714 flow [2022-11-18 20:39:32,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-11-18 20:39:32,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:39:32,919 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;@2bc709ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:39:32,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-18 20:39:32,943 INFO L130 PetriNetUnfolder]: 3/82 cut-off events. [2022-11-18 20:39:32,944 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:39:32,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:32,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:32,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:39:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash -843872005, now seen corresponding path program 1 times [2022-11-18 20:39:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:32,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178252933] [2022-11-18 20:39:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:33,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:33,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178252933] [2022-11-18 20:39:33,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178252933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:33,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:33,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:39:33,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788152325] [2022-11-18 20:39:33,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:39:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:39:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:39:33,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 345 [2022-11-18 20:39:33,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 313 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 289.5) internal successors, (1158), 4 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:33,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:33,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 345 [2022-11-18 20:39:33,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:33,917 INFO L130 PetriNetUnfolder]: 29/490 cut-off events. [2022-11-18 20:39:33,917 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 20:39:33,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 490 events. 29/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1567 event pairs, 0 based on Foata normal form. 24/448 useless extension candidates. Maximal degree in co-relation 470. Up to 44 conditions per place. [2022-11-18 20:39:33,928 INFO L137 encePairwiseOnDemand]: 313/345 looper letters, 58 selfloop transitions, 14 changer transitions 6/332 dead transitions. [2022-11-18 20:39:33,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 332 transitions, 838 flow [2022-11-18 20:39:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:39:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:39:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1536 transitions. [2022-11-18 20:39:33,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8904347826086957 [2022-11-18 20:39:33,961 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1536 transitions. [2022-11-18 20:39:33,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1536 transitions. [2022-11-18 20:39:33,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:33,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1536 transitions. [2022-11-18 20:39:33,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:33,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:33,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:33,998 INFO L175 Difference]: Start difference. First operand has 296 places, 313 transitions, 641 flow. Second operand 5 states and 1536 transitions. [2022-11-18 20:39:33,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 332 transitions, 838 flow [2022-11-18 20:39:34,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 332 transitions, 820 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:39:34,015 INFO L231 Difference]: Finished difference. Result has 298 places, 306 transitions, 700 flow [2022-11-18 20:39:34,018 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=298, PETRI_TRANSITIONS=306} [2022-11-18 20:39:34,022 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-18 20:39:34,022 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 306 transitions, 700 flow [2022-11-18 20:39:34,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.5) internal successors, (1158), 4 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:34,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:34,024 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:39:34,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:39:34,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash -652554126, now seen corresponding path program 1 times [2022-11-18 20:39:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:34,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660817840] [2022-11-18 20:39:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:34,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:34,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:34,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660817840] [2022-11-18 20:39:34,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660817840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547876736] [2022-11-18 20:39:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:34,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:34,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:34,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:34,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:39:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:34,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:39:34,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:34,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:34,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547876736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:34,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:34,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:39:34,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435400523] [2022-11-18 20:39:34,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:39:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:39:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:39:34,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 345 [2022-11-18 20:39:34,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 306 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 290.6666666666667) internal successors, (3488), 12 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:34,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:34,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 345 [2022-11-18 20:39:34,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:35,307 INFO L130 PetriNetUnfolder]: 71/1057 cut-off events. [2022-11-18 20:39:35,308 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 20:39:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1057 events. 71/1057 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5153 event pairs, 0 based on Foata normal form. 9/931 useless extension candidates. Maximal degree in co-relation 696. Up to 35 conditions per place. [2022-11-18 20:39:35,320 INFO L137 encePairwiseOnDemand]: 322/345 looper letters, 109 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-18 20:39:35,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 425 transitions, 1382 flow [2022-11-18 20:39:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:39:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:39:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5364 transitions. [2022-11-18 20:39:35,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863768115942029 [2022-11-18 20:39:35,331 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5364 transitions. [2022-11-18 20:39:35,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5364 transitions. [2022-11-18 20:39:35,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:35,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5364 transitions. [2022-11-18 20:39:35,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 298.0) internal successors, (5364), 18 states have internal predecessors, (5364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:35,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 345.0) internal successors, (6555), 19 states have internal predecessors, (6555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:35,363 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 345.0) internal successors, (6555), 19 states have internal predecessors, (6555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:35,363 INFO L175 Difference]: Start difference. First operand has 298 places, 306 transitions, 700 flow. Second operand 18 states and 5364 transitions. [2022-11-18 20:39:35,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 425 transitions, 1382 flow [2022-11-18 20:39:35,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 425 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:39:35,374 INFO L231 Difference]: Finished difference. Result has 312 places, 348 transitions, 1062 flow [2022-11-18 20:39:35,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=312, PETRI_TRANSITIONS=348} [2022-11-18 20:39:35,376 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 16 predicate places. [2022-11-18 20:39:35,376 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 348 transitions, 1062 flow [2022-11-18 20:39:35,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 290.6666666666667) internal successors, (3488), 12 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:35,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:35,379 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:35,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:35,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:35,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:39:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:35,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1245659227, now seen corresponding path program 1 times [2022-11-18 20:39:35,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:35,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112193732] [2022-11-18 20:39:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:35,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:35,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112193732] [2022-11-18 20:39:35,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112193732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:35,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000019554] [2022-11-18 20:39:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:35,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:35,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:35,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:39:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:35,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:39:35,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:36,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:39:36,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000019554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:36,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:39:36,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:39:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013088997] [2022-11-18 20:39:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:36,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:39:36,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 345 [2022-11-18 20:39:36,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 348 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:36,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:36,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 345 [2022-11-18 20:39:36,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:36,493 INFO L130 PetriNetUnfolder]: 71/1045 cut-off events. [2022-11-18 20:39:36,494 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 20:39:36,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 1045 events. 71/1045 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5072 event pairs, 0 based on Foata normal form. 12/922 useless extension candidates. Maximal degree in co-relation 1070. Up to 68 conditions per place. [2022-11-18 20:39:36,527 INFO L137 encePairwiseOnDemand]: 328/345 looper letters, 59 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2022-11-18 20:39:36,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 356 transitions, 1237 flow [2022-11-18 20:39:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:39:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2088 transitions. [2022-11-18 20:39:36,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8645962732919255 [2022-11-18 20:39:36,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2088 transitions. [2022-11-18 20:39:36,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2088 transitions. [2022-11-18 20:39:36,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:36,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2088 transitions. [2022-11-18 20:39:36,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 298.2857142857143) internal successors, (2088), 7 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:36,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:36,546 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:36,547 INFO L175 Difference]: Start difference. First operand has 312 places, 348 transitions, 1062 flow. Second operand 7 states and 2088 transitions. [2022-11-18 20:39:36,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 356 transitions, 1237 flow [2022-11-18 20:39:36,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 356 transitions, 1121 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 20:39:36,564 INFO L231 Difference]: Finished difference. Result has 306 places, 336 transitions, 951 flow [2022-11-18 20:39:36,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=951, PETRI_PLACES=306, PETRI_TRANSITIONS=336} [2022-11-18 20:39:36,567 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 10 predicate places. [2022-11-18 20:39:36,568 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 336 transitions, 951 flow [2022-11-18 20:39:36,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:36,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:36,569 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:36,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:36,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:36,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:39:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash 259833019, now seen corresponding path program 2 times [2022-11-18 20:39:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939260608] [2022-11-18 20:39:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:36,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:37,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939260608] [2022-11-18 20:39:37,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939260608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:37,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170328133] [2022-11-18 20:39:37,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:39:37,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:37,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:37,220 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:37,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:39:37,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:39:37,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:39:37,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:39:37,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:39:37,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:39:37,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170328133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:37,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:39:37,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:39:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221644358] [2022-11-18 20:39:37,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:37,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:39:37,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:37,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:39:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:39:37,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 345 [2022-11-18 20:39:37,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 336 transitions, 951 flow. Second operand has 18 states, 18 states have (on average 257.6111111111111) internal successors, (4637), 18 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:37,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:37,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 345 [2022-11-18 20:39:37,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:40,792 INFO L130 PetriNetUnfolder]: 1786/6434 cut-off events. [2022-11-18 20:39:40,792 INFO L131 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2022-11-18 20:39:40,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 6434 events. 1786/6434 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 57557 event pairs, 1008 based on Foata normal form. 6/4948 useless extension candidates. Maximal degree in co-relation 8190. Up to 406 conditions per place. [2022-11-18 20:39:40,905 INFO L137 encePairwiseOnDemand]: 317/345 looper letters, 248 selfloop transitions, 97 changer transitions 0/565 dead transitions. [2022-11-18 20:39:40,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 565 transitions, 2236 flow [2022-11-18 20:39:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:39:40,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 20:39:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12797 transitions. [2022-11-18 20:39:40,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7569949719018042 [2022-11-18 20:39:40,932 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12797 transitions. [2022-11-18 20:39:40,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12797 transitions. [2022-11-18 20:39:40,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:40,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12797 transitions. [2022-11-18 20:39:40,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 261.16326530612247) internal successors, (12797), 49 states have internal predecessors, (12797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 345.0) internal successors, (17250), 50 states have internal predecessors, (17250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,018 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 345.0) internal successors, (17250), 50 states have internal predecessors, (17250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,019 INFO L175 Difference]: Start difference. First operand has 306 places, 336 transitions, 951 flow. Second operand 49 states and 12797 transitions. [2022-11-18 20:39:41,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 565 transitions, 2236 flow [2022-11-18 20:39:41,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 565 transitions, 2167 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:39:41,037 INFO L231 Difference]: Finished difference. Result has 352 places, 376 transitions, 1294 flow [2022-11-18 20:39:41,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1294, PETRI_PLACES=352, PETRI_TRANSITIONS=376} [2022-11-18 20:39:41,040 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 56 predicate places. [2022-11-18 20:39:41,040 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 376 transitions, 1294 flow [2022-11-18 20:39:41,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 257.6111111111111) internal successors, (4637), 18 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:41,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:41,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:41,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31a17b1f-6822-41ef-b259-a85a9aca238d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:41,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:39:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:41,249 INFO L85 PathProgramCache]: Analyzing trace with hash 311231958, now seen corresponding path program 1 times [2022-11-18 20:39:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:41,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778640420] [2022-11-18 20:39:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:41,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:41,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778640420] [2022-11-18 20:39:41,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778640420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:41,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:41,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:39:41,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138360225] [2022-11-18 20:39:41,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:41,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:39:41,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:41,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:39:41,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:39:41,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 345 [2022-11-18 20:39:41,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 376 transitions, 1294 flow. Second operand has 11 states, 11 states have (on average 233.45454545454547) internal successors, (2568), 11 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:41,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:41,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 345 [2022-11-18 20:39:41,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:39:51,768 INFO L130 PetriNetUnfolder]: 19839/49441 cut-off events. [2022-11-18 20:39:51,768 INFO L131 PetriNetUnfolder]: For 3501/3501 co-relation queries the response was YES. [2022-11-18 20:39:52,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78750 conditions, 49441 events. 19839/49441 cut-off events. For 3501/3501 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 561759 event pairs, 11410 based on Foata normal form. 0/34811 useless extension candidates. Maximal degree in co-relation 67471. Up to 12848 conditions per place. [2022-11-18 20:39:52,478 INFO L137 encePairwiseOnDemand]: 327/345 looper letters, 234 selfloop transitions, 35 changer transitions 0/496 dead transitions. [2022-11-18 20:39:52,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 496 transitions, 2315 flow [2022-11-18 20:39:52,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:39:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:39:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4060 transitions. [2022-11-18 20:39:52,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6922421142369991 [2022-11-18 20:39:52,489 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4060 transitions. [2022-11-18 20:39:52,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4060 transitions. [2022-11-18 20:39:52,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:39:52,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4060 transitions. [2022-11-18 20:39:52,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 238.8235294117647) internal successors, (4060), 17 states have internal predecessors, (4060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 345.0) internal successors, (6210), 18 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,512 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 345.0) internal successors, (6210), 18 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,512 INFO L175 Difference]: Start difference. First operand has 352 places, 376 transitions, 1294 flow. Second operand 17 states and 4060 transitions. [2022-11-18 20:39:52,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 496 transitions, 2315 flow [2022-11-18 20:39:52,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 496 transitions, 2134 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-18 20:39:52,525 INFO L231 Difference]: Finished difference. Result has 362 places, 390 transitions, 1373 flow [2022-11-18 20:39:52,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1373, PETRI_PLACES=362, PETRI_TRANSITIONS=390} [2022-11-18 20:39:52,529 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 66 predicate places. [2022-11-18 20:39:52,529 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 390 transitions, 1373 flow [2022-11-18 20:39:52,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 233.45454545454547) internal successors, (2568), 11 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:39:52,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:39:52,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:39:52,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:39:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1058256961, now seen corresponding path program 1 times [2022-11-18 20:39:52,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:52,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059413289] [2022-11-18 20:39:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:52,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059413289] [2022-11-18 20:39:52,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059413289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:52,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:52,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741860970] [2022-11-18 20:39:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:39:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:39:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:39:52,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 345 [2022-11-18 20:39:52,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 390 transitions, 1373 flow. Second operand has 8 states, 8 states have (on average 264.375) internal successors, (2115), 8 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:39:52,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:39:52,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 345 [2022-11-18 20:39:52,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:09,316 INFO L130 PetriNetUnfolder]: 33573/84027 cut-off events. [2022-11-18 20:40:09,316 INFO L131 PetriNetUnfolder]: For 8092/8092 co-relation queries the response was YES. [2022-11-18 20:40:10,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134572 conditions, 84027 events. 33573/84027 cut-off events. For 8092/8092 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 1031446 event pairs, 19103 based on Foata normal form. 952/62236 useless extension candidates. Maximal degree in co-relation 115281. Up to 25536 conditions per place. [2022-11-18 20:40:10,629 INFO L137 encePairwiseOnDemand]: 330/345 looper letters, 165 selfloop transitions, 37 changer transitions 0/446 dead transitions. [2022-11-18 20:40:10,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 446 transitions, 1973 flow [2022-11-18 20:40:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:40:10,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:40:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3231 transitions. [2022-11-18 20:40:10,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7804347826086957 [2022-11-18 20:40:10,639 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3231 transitions. [2022-11-18 20:40:10,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3231 transitions. [2022-11-18 20:40:10,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:10,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3231 transitions. [2022-11-18 20:40:10,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 269.25) internal successors, (3231), 12 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 345.0) internal successors, (4485), 13 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,661 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 345.0) internal successors, (4485), 13 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,662 INFO L175 Difference]: Start difference. First operand has 362 places, 390 transitions, 1373 flow. Second operand 12 states and 3231 transitions. [2022-11-18 20:40:10,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 446 transitions, 1973 flow [2022-11-18 20:40:10,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 446 transitions, 1951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:40:10,692 INFO L231 Difference]: Finished difference. Result has 371 places, 394 transitions, 1479 flow [2022-11-18 20:40:10,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1479, PETRI_PLACES=371, PETRI_TRANSITIONS=394} [2022-11-18 20:40:10,696 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 75 predicate places. [2022-11-18 20:40:10,697 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 394 transitions, 1479 flow [2022-11-18 20:40:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 264.375) internal successors, (2115), 8 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:10,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:10,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:40:10,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:40:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1998477768, now seen corresponding path program 1 times [2022-11-18 20:40:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:10,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168919920] [2022-11-18 20:40:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:10,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:10,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168919920] [2022-11-18 20:40:10,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168919920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:10,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:10,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:40:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949129038] [2022-11-18 20:40:10,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:10,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:40:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:40:10,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:40:10,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 345 [2022-11-18 20:40:10,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 394 transitions, 1479 flow. Second operand has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:10,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:10,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 345 [2022-11-18 20:40:10,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:40:13,261 INFO L130 PetriNetUnfolder]: 2108/10443 cut-off events. [2022-11-18 20:40:13,261 INFO L131 PetriNetUnfolder]: For 1145/1173 co-relation queries the response was YES. [2022-11-18 20:40:13,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17567 conditions, 10443 events. 2108/10443 cut-off events. For 1145/1173 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 116816 event pairs, 728 based on Foata normal form. 28/9183 useless extension candidates. Maximal degree in co-relation 14991. Up to 2073 conditions per place. [2022-11-18 20:40:13,439 INFO L137 encePairwiseOnDemand]: 339/345 looper letters, 34 selfloop transitions, 4 changer transitions 0/413 dead transitions. [2022-11-18 20:40:13,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 413 transitions, 1604 flow [2022-11-18 20:40:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:40:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:40:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1590 transitions. [2022-11-18 20:40:13,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9217391304347826 [2022-11-18 20:40:13,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1590 transitions. [2022-11-18 20:40:13,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1590 transitions. [2022-11-18 20:40:13,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:40:13,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1590 transitions. [2022-11-18 20:40:13,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,453 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,454 INFO L175 Difference]: Start difference. First operand has 371 places, 394 transitions, 1479 flow. Second operand 5 states and 1590 transitions. [2022-11-18 20:40:13,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 413 transitions, 1604 flow [2022-11-18 20:40:13,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 413 transitions, 1578 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:40:13,713 INFO L231 Difference]: Finished difference. Result has 372 places, 397 transitions, 1483 flow [2022-11-18 20:40:13,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1483, PETRI_PLACES=372, PETRI_TRANSITIONS=397} [2022-11-18 20:40:13,715 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 76 predicate places. [2022-11-18 20:40:13,715 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 397 transitions, 1483 flow [2022-11-18 20:40:13,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:13,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:40:13,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:13,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:40:13,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 20:40:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash -213871381, now seen corresponding path program 1 times [2022-11-18 20:40:13,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:13,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613385268] [2022-11-18 20:40:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:13,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:14,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:14,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613385268] [2022-11-18 20:40:14,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613385268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:14,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:14,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:40:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280841832] [2022-11-18 20:40:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:14,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:40:14,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:14,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:40:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:40:14,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 345 [2022-11-18 20:40:14,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 397 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 233.54545454545453) internal successors, (2569), 11 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:14,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:40:14,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 345 [2022-11-18 20:40:14,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand