./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.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_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/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_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/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_2ed2bee7-7367-4308-b05d-941f6a32efa0/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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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 18:24:29,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:24:29,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:24:29,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:24:29,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:24:29,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:24:29,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:24:29,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:24:29,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:24:29,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:24:29,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:24:29,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:24:29,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:24:29,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:24:29,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:24:29,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:24:29,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:24:29,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:24:29,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:24:29,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:24:29,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:24:29,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:24:29,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:24:29,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:24:29,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:24:29,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:24:29,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:24:29,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:24:29,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:24:29,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:24:29,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:24:29,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:24:29,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:24:29,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:24:29,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:24:29,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:24:29,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:24:29,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:24:29,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:24:29,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:24:29,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:24:29,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:24:29,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:24:29,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:24:29,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:24:29,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:24:29,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:24:29,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:24:29,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:24:29,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:24:29,281 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:24:29,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:24:29,281 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:24:29,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:24:29,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:24:29,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:24:29,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:24:29,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:24:29,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:24:29,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:24:29,283 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:24:29,283 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:24:29,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:24:29,283 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:24:29,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:24:29,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:24:29,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:24:29,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:24:29,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:24:29,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:24:29,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:24:29,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:24:29,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:24:29,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:24:29,285 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:24:29,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:24:29,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:24:29,286 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_2ed2bee7-7367-4308-b05d-941f6a32efa0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-18 18:24:29,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:24:29,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:24:29,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:24:29,591 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:24:29,592 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:24:29,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-18 18:24:29,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/data/3e0acab15/fa2fa22e91644600b49070680664fa51/FLAG44dff74e3 [2022-11-18 18:24:30,174 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:24:30,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-18 18:24:30,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/data/3e0acab15/fa2fa22e91644600b49070680664fa51/FLAG44dff74e3 [2022-11-18 18:24:30,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/data/3e0acab15/fa2fa22e91644600b49070680664fa51 [2022-11-18 18:24:30,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:24:30,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:24:30,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:24:30,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:24:30,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:24:30,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8d3896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30, skipping insertion in model container [2022-11-18 18:24:30,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:24:30,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:24:30,780 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_2ed2bee7-7367-4308-b05d-941f6a32efa0/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-18 18:24:30,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:24:30,796 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:24:30,829 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_2ed2bee7-7367-4308-b05d-941f6a32efa0/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-18 18:24:30,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:24:30,848 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:24:30,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30 WrapperNode [2022-11-18 18:24:30,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:24:30,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:24:30,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:24:30,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:24:30,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,896 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 178 [2022-11-18 18:24:30,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:24:30,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:24:30,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:24:30,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:24:30,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,930 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:24:30,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:24:30,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:24:30,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:24:30,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (1/1) ... [2022-11-18 18:24:30,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:24:30,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:30,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:24:31,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:24:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:24:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:24:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:24:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:24:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:24:31,033 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:24:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:24:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:24:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:24:31,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:24:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:24:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:24:31,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:24:31,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:24:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:24:31,037 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 18:24:31,160 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:24:31,163 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:24:31,912 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:24:31,927 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:24:31,927 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 18:24:31,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:24:31 BoogieIcfgContainer [2022-11-18 18:24:31,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:24:31,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:24:31,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:24:31,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:24:31,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:24:30" (1/3) ... [2022-11-18 18:24:31,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b5afb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:24:31, skipping insertion in model container [2022-11-18 18:24:31,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:30" (2/3) ... [2022-11-18 18:24:31,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b5afb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:24:31, skipping insertion in model container [2022-11-18 18:24:31,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:24:31" (3/3) ... [2022-11-18 18:24:31,941 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-11-18 18:24:31,951 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:24:31,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:24:31,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 18:24:31,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:24:32,138 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:24:32,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 337 transitions, 698 flow [2022-11-18 18:24:32,435 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-11-18 18:24:32,435 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:24:32,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 28/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-18 18:24:32,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 337 transitions, 698 flow [2022-11-18 18:24:32,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-11-18 18:24:32,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:24:32,472 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;@211aa51c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:24:32,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-18 18:24:32,487 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2022-11-18 18:24:32,488 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:24:32,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:32,489 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 18:24:32,490 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 18:24:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1684154337, now seen corresponding path program 1 times [2022-11-18 18:24:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:32,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834822180] [2022-11-18 18:24:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:32,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:33,024 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 18:24:33,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:33,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834822180] [2022-11-18 18:24:33,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834822180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:33,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:33,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334868941] [2022-11-18 18:24:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:33,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:24:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:24:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:24:33,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-18 18:24:33,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 313 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 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 18:24:33,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:33,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-18 18:24:33,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:33,468 INFO L130 PetriNetUnfolder]: 29/490 cut-off events. [2022-11-18 18:24:33,468 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-18 18:24:33,476 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 1552 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 18:24:33,481 INFO L137 encePairwiseOnDemand]: 305/337 looper letters, 58 selfloop transitions, 14 changer transitions 6/332 dead transitions. [2022-11-18 18:24:33,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 332 transitions, 838 flow [2022-11-18 18:24:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:24:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:24:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1501 transitions. [2022-11-18 18:24:33,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8908011869436202 [2022-11-18 18:24:33,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1501 transitions. [2022-11-18 18:24:33,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1501 transitions. [2022-11-18 18:24:33,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:33,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1501 transitions. [2022-11-18 18:24:33,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 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 18:24:33,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 18:24:33,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 18:24:33,544 INFO L175 Difference]: Start difference. First operand has 296 places, 313 transitions, 641 flow. Second operand 5 states and 1501 transitions. [2022-11-18 18:24:33,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 332 transitions, 838 flow [2022-11-18 18:24:33,553 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 18:24:33,562 INFO L231 Difference]: Finished difference. Result has 298 places, 306 transitions, 700 flow [2022-11-18 18:24:33,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, 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 18:24:33,569 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-18 18:24:33,569 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 306 transitions, 700 flow [2022-11-18 18:24:33,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 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 18:24:33,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:33,572 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 18:24:33,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:24:33,572 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 18:24:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash 685451607, now seen corresponding path program 1 times [2022-11-18 18:24:33,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:33,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690325204] [2022-11-18 18:24:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:33,919 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 18:24:33,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:33,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690325204] [2022-11-18 18:24:33,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690325204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:33,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945649555] [2022-11-18 18:24:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:33,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:33,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:33,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:33,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:24:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:34,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:24:34,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:34,240 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 18:24:34,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:34,349 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 18:24:34,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945649555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:34,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:24:34,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 18:24:34,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711356233] [2022-11-18 18:24:34,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:34,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:24:34,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:24:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:24:34,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-18 18:24:34,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 306 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 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 18:24:34,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:34,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-18 18:24:34,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:35,193 INFO L130 PetriNetUnfolder]: 71/1057 cut-off events. [2022-11-18 18:24:35,194 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 18:24:35,203 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 5158 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 18:24:35,210 INFO L137 encePairwiseOnDemand]: 314/337 looper letters, 109 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-18 18:24:35,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 425 transitions, 1382 flow [2022-11-18 18:24:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:24:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:24:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5238 transitions. [2022-11-18 18:24:35,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8635014836795252 [2022-11-18 18:24:35,222 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5238 transitions. [2022-11-18 18:24:35,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5238 transitions. [2022-11-18 18:24:35,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:35,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5238 transitions. [2022-11-18 18:24:35,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 291.0) internal successors, (5238), 18 states have internal predecessors, (5238), 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 18:24:35,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 337.0) internal successors, (6403), 19 states have internal predecessors, (6403), 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 18:24:35,257 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 337.0) internal successors, (6403), 19 states have internal predecessors, (6403), 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 18:24:35,258 INFO L175 Difference]: Start difference. First operand has 298 places, 306 transitions, 700 flow. Second operand 18 states and 5238 transitions. [2022-11-18 18:24:35,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 425 transitions, 1382 flow [2022-11-18 18:24:35,264 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 18:24:35,274 INFO L231 Difference]: Finished difference. Result has 312 places, 348 transitions, 1062 flow [2022-11-18 18:24:35,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, 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 18:24:35,276 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 16 predicate places. [2022-11-18 18:24:35,277 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 348 transitions, 1062 flow [2022-11-18 18:24:35,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 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 18:24:35,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:35,281 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 18:24:35,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:35,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:35,488 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 18:24:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash -225835979, now seen corresponding path program 1 times [2022-11-18 18:24:35,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:35,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513668726] [2022-11-18 18:24:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:35,622 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 18:24:35,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:35,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513668726] [2022-11-18 18:24:35,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513668726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:35,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537076763] [2022-11-18 18:24:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:35,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:35,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:35,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:35,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:24:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:35,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:24:35,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:35,888 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 18:24:35,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:35,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537076763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:35,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:24:35,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:24:35,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487802519] [2022-11-18 18:24:35,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:35,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:35,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:35,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:35,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:24:35,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-18 18:24:35,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 348 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 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 18:24:35,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:35,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-18 18:24:35,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:36,333 INFO L130 PetriNetUnfolder]: 71/1045 cut-off events. [2022-11-18 18:24:36,334 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-18 18:24:36,340 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 5064 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 18:24:36,347 INFO L137 encePairwiseOnDemand]: 320/337 looper letters, 59 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2022-11-18 18:24:36,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 356 transitions, 1237 flow [2022-11-18 18:24:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:24:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:24:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2039 transitions. [2022-11-18 18:24:36,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864349300551081 [2022-11-18 18:24:36,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2039 transitions. [2022-11-18 18:24:36,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2039 transitions. [2022-11-18 18:24:36,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:36,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2039 transitions. [2022-11-18 18:24:36,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.2857142857143) internal successors, (2039), 7 states have internal predecessors, (2039), 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 18:24:36,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 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 18:24:36,367 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 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 18:24:36,368 INFO L175 Difference]: Start difference. First operand has 312 places, 348 transitions, 1062 flow. Second operand 7 states and 2039 transitions. [2022-11-18 18:24:36,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 356 transitions, 1237 flow [2022-11-18 18:24:36,379 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 18:24:36,386 INFO L231 Difference]: Finished difference. Result has 306 places, 336 transitions, 951 flow [2022-11-18 18:24:36,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, 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 18:24:36,390 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 10 predicate places. [2022-11-18 18:24:36,390 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 336 transitions, 951 flow [2022-11-18 18:24:36,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 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 18:24:36,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:36,392 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 18:24:36,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:36,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:36,600 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 18:24:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1090246175, now seen corresponding path program 2 times [2022-11-18 18:24:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:36,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902916243] [2022-11-18 18:24:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:36,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:36,883 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 18:24:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:36,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902916243] [2022-11-18 18:24:36,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902916243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:24:36,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588613858] [2022-11-18 18:24:36,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:24:36,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:36,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:36,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:36,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:24:37,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:24:37,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:24:37,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:24:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:37,264 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 18:24:37,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:37,487 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 18:24:37,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588613858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:37,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:24:37,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 18:24:37,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612331033] [2022-11-18 18:24:37,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:37,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:24:37,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:24:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:24:37,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 337 [2022-11-18 18:24:37,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 336 transitions, 951 flow. Second operand has 18 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 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 18:24:37,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:37,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 337 [2022-11-18 18:24:37,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:40,351 INFO L130 PetriNetUnfolder]: 897/4166 cut-off events. [2022-11-18 18:24:40,352 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2022-11-18 18:24:40,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 4166 events. 897/4166 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 34299 event pairs, 455 based on Foata normal form. 6/3255 useless extension candidates. Maximal degree in co-relation 4650. Up to 232 conditions per place. [2022-11-18 18:24:40,457 INFO L137 encePairwiseOnDemand]: 309/337 looper letters, 248 selfloop transitions, 97 changer transitions 0/565 dead transitions. [2022-11-18 18:24:40,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 565 transitions, 2236 flow [2022-11-18 18:24:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 18:24:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 18:24:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12454 transitions. [2022-11-18 18:24:40,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7541936655968026 [2022-11-18 18:24:40,492 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12454 transitions. [2022-11-18 18:24:40,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12454 transitions. [2022-11-18 18:24:40,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:40,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12454 transitions. [2022-11-18 18:24:40,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 254.16326530612244) internal successors, (12454), 49 states have internal predecessors, (12454), 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 18:24:40,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 337.0) internal successors, (16850), 50 states have internal predecessors, (16850), 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 18:24:40,580 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 337.0) internal successors, (16850), 50 states have internal predecessors, (16850), 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 18:24:40,580 INFO L175 Difference]: Start difference. First operand has 306 places, 336 transitions, 951 flow. Second operand 49 states and 12454 transitions. [2022-11-18 18:24:40,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 565 transitions, 2236 flow [2022-11-18 18:24:40,586 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 18:24:40,596 INFO L231 Difference]: Finished difference. Result has 352 places, 376 transitions, 1294 flow [2022-11-18 18:24:40,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, 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 18:24:40,598 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 56 predicate places. [2022-11-18 18:24:40,598 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 376 transitions, 1294 flow [2022-11-18 18:24:40,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 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 18:24:40,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:40,601 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 18:24:40,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:40,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ed2bee7-7367-4308-b05d-941f6a32efa0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:40,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 18:24:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:40,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1332271102, now seen corresponding path program 1 times [2022-11-18 18:24:40,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:40,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514225926] [2022-11-18 18:24:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:41,326 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 18:24:41,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:41,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514225926] [2022-11-18 18:24:41,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514225926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:41,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:41,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:24:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354077511] [2022-11-18 18:24:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:41,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:24:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:24:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:24:41,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 337 [2022-11-18 18:24:41,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 376 transitions, 1294 flow. Second operand has 11 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 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 18:24:41,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:41,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 337 [2022-11-18 18:24:41,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:52,431 INFO L130 PetriNetUnfolder]: 19839/49441 cut-off events. [2022-11-18 18:24:52,431 INFO L131 PetriNetUnfolder]: For 3501/3501 co-relation queries the response was YES. [2022-11-18 18:24:52,629 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 900. Compared 560712 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 18:24:53,205 INFO L137 encePairwiseOnDemand]: 319/337 looper letters, 234 selfloop transitions, 35 changer transitions 0/496 dead transitions. [2022-11-18 18:24:53,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 496 transitions, 2315 flow [2022-11-18 18:24:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:24:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:24:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4026 transitions. [2022-11-18 18:24:53,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7027404433583523 [2022-11-18 18:24:53,214 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4026 transitions. [2022-11-18 18:24:53,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4026 transitions. [2022-11-18 18:24:53,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:53,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4026 transitions. [2022-11-18 18:24:53,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 236.8235294117647) internal successors, (4026), 17 states have internal predecessors, (4026), 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 18:24:53,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 337.0) internal successors, (6066), 18 states have internal predecessors, (6066), 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 18:24:53,237 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 337.0) internal successors, (6066), 18 states have internal predecessors, (6066), 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 18:24:53,238 INFO L175 Difference]: Start difference. First operand has 352 places, 376 transitions, 1294 flow. Second operand 17 states and 4026 transitions. [2022-11-18 18:24:53,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 496 transitions, 2315 flow [2022-11-18 18:24:53,246 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 18:24:53,252 INFO L231 Difference]: Finished difference. Result has 362 places, 390 transitions, 1373 flow [2022-11-18 18:24:53,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, 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 18:24:53,256 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 66 predicate places. [2022-11-18 18:24:53,257 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 390 transitions, 1373 flow [2022-11-18 18:24:53,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 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 18:24:53,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:53,258 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 18:24:53,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:24:53,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 18:24:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1649269633, now seen corresponding path program 1 times [2022-11-18 18:24:53,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:53,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937384221] [2022-11-18 18:24:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:53,534 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 18:24:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:53,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937384221] [2022-11-18 18:24:53,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937384221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:53,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:53,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:24:53,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600523097] [2022-11-18 18:24:53,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:53,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:24:53,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:53,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:24:53,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:24:53,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 337 [2022-11-18 18:24:53,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 390 transitions, 1373 flow. Second operand has 8 states, 8 states have (on average 257.375) internal successors, (2059), 8 states have internal predecessors, (2059), 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 18:24:53,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:53,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 337 [2022-11-18 18:24:53,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:25:09,252 INFO L130 PetriNetUnfolder]: 33573/84027 cut-off events. [2022-11-18 18:25:09,252 INFO L131 PetriNetUnfolder]: For 8092/8092 co-relation queries the response was YES. [2022-11-18 18:25:09,673 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 1504. Compared 1030700 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 18:25:10,182 INFO L137 encePairwiseOnDemand]: 322/337 looper letters, 165 selfloop transitions, 37 changer transitions 0/446 dead transitions. [2022-11-18 18:25:10,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 446 transitions, 1973 flow [2022-11-18 18:25:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:25:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:25:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3147 transitions. [2022-11-18 18:25:10,195 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7781899109792285 [2022-11-18 18:25:10,195 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3147 transitions. [2022-11-18 18:25:10,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3147 transitions. [2022-11-18 18:25:10,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:25:10,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3147 transitions. [2022-11-18 18:25:10,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 262.25) internal successors, (3147), 12 states have internal predecessors, (3147), 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 18:25:10,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 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 18:25:10,215 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 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 18:25:10,216 INFO L175 Difference]: Start difference. First operand has 362 places, 390 transitions, 1373 flow. Second operand 12 states and 3147 transitions. [2022-11-18 18:25:10,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 446 transitions, 1973 flow [2022-11-18 18:25:10,237 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 18:25:10,246 INFO L231 Difference]: Finished difference. Result has 371 places, 394 transitions, 1479 flow [2022-11-18 18:25:10,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, 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 18:25:10,250 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 75 predicate places. [2022-11-18 18:25:10,250 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 394 transitions, 1479 flow [2022-11-18 18:25:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 257.375) internal successors, (2059), 8 states have internal predecessors, (2059), 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 18:25:10,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:25:10,251 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 18:25:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:25:10,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 18:25:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1577809928, now seen corresponding path program 1 times [2022-11-18 18:25:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:10,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645829270] [2022-11-18 18:25:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:10,377 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 18:25:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:10,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645829270] [2022-11-18 18:25:10,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645829270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:10,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:10,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:25:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628525091] [2022-11-18 18:25:10,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:10,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:10,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:10,381 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 337 [2022-11-18 18:25:10,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 394 transitions, 1479 flow. Second operand has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 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 18:25:10,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:25:10,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 337 [2022-11-18 18:25:10,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:25:13,270 INFO L130 PetriNetUnfolder]: 2444/13859 cut-off events. [2022-11-18 18:25:13,271 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2022-11-18 18:25:13,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20983 conditions, 13859 events. 2444/13859 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 165214 event pairs, 672 based on Foata normal form. 0/11871 useless extension candidates. Maximal degree in co-relation 17919. Up to 2073 conditions per place. [2022-11-18 18:25:13,446 INFO L137 encePairwiseOnDemand]: 331/337 looper letters, 34 selfloop transitions, 4 changer transitions 0/413 dead transitions. [2022-11-18 18:25:13,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 413 transitions, 1604 flow [2022-11-18 18:25:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:25:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:25:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1555 transitions. [2022-11-18 18:25:13,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9228486646884273 [2022-11-18 18:25:13,449 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1555 transitions. [2022-11-18 18:25:13,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1555 transitions. [2022-11-18 18:25:13,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:25:13,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1555 transitions. [2022-11-18 18:25:13,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 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 18:25:13,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 18:25:13,456 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 18:25:13,456 INFO L175 Difference]: Start difference. First operand has 371 places, 394 transitions, 1479 flow. Second operand 5 states and 1555 transitions. [2022-11-18 18:25:13,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 413 transitions, 1604 flow [2022-11-18 18:25:13,468 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 18:25:13,473 INFO L231 Difference]: Finished difference. Result has 372 places, 397 transitions, 1483 flow [2022-11-18 18:25:13,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, 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 18:25:13,475 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 76 predicate places. [2022-11-18 18:25:13,475 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 397 transitions, 1483 flow [2022-11-18 18:25:13,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 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 18:25:13,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:25:13,476 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 18:25:13,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:25:13,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 18:25:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash -685463407, now seen corresponding path program 1 times [2022-11-18 18:25:13,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:13,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323123744] [2022-11-18 18:25:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:13,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:13,827 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 18:25:13,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:13,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323123744] [2022-11-18 18:25:13,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323123744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:13,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:13,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:25:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201523042] [2022-11-18 18:25:13,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:13,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:25:13,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:25:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:25:13,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 337 [2022-11-18 18:25:13,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 397 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 231.54545454545453) internal successors, (2547), 11 states have internal predecessors, (2547), 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 18:25:13,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:25:13,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 337 [2022-11-18 18:25:13,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand